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130005420 = 223537157373
BaseRepresentation
bin1111011111110…
…11100110101100
3100001121221220120
413233323212230
5231240133140
620522244540
73136012356
oct757734654
9301557816
10130005420
1167425aa6
1237656750
1320c1b0ac
14133a20d6
15b6301d0
hex7bfb9ac

130005420 has 96 divisors (see below), whose sum is σ = 377243328. Its totient is φ = 33426432.

The previous prime is 130005419. The next prime is 130005427. The reversal of 130005420 is 24500031.

130005420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

130005420 is a modest number, since divided by 5420 gives 1300 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 130005420.

It is not an unprimeable number, because it can be changed into a prime (130005427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348354 + ... + 348726.

It is an arithmetic number, because the mean of its divisors is an integer number (3929618).

Almost surely, 2130005420 is an apocalyptic number.

130005420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130005420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188621664).

130005420 is an abundant number, since it is smaller than the sum of its proper divisors (247237908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130005420 is a wasteful number, since it uses less digits than its factorization.

130005420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 130005420 is about 11401.9919312373. The cubic root of 130005420 is about 506.5867419712.

Adding to 130005420 its reverse (24500031), we get a palindrome (154505451).

The spelling of 130005420 in words is "one hundred thirty million, five thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 157 185 222 314 370 373 444 471 555 628 740 746 785 942 1110 1119 1492 1570 1865 1884 2220 2238 2355 3140 3730 4476 4710 5595 5809 7460 9420 11190 11618 13801 17427 22380 23236 27602 29045 34854 41403 55204 58090 58561 69005 69708 82806 87135 116180 117122 138010 165612 174270 175683 207015 234244 276020 292805 348540 351366 414030 585610 702732 828060 878415 1171220 1756830 2166757 3513660 4333514 6500271 8667028 10833785 13000542 21667570 26001084 32501355 43335140 65002710 130005420