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130199620 = 22561106721
BaseRepresentation
bin1111100001010…
…11000001000100
3100001222211022011
413300223001010
5231312341440
620530344004
73140451505
oct760530104
9301884264
10130199620
11675489a1
123772b004
1320c885c5
1413412bac
15b66c9ea
hex7c2b044

130199620 has 24 divisors (see below), whose sum is σ = 277904088. Its totient is φ = 51225600.

The previous prime is 130199611. The next prime is 130199623. The reversal of 130199620 is 26991031.

130199620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1331716 + 128867904 = 1154^2 + 11352^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (130199623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52141 + ... + 54580.

It is an arithmetic number, because the mean of its divisors is an integer number (11579337).

Almost surely, 2130199620 is an apocalyptic number.

130199620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130199620 is an abundant number, since it is smaller than the sum of its proper divisors (147704468).

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

130199620 is a wasteful number, since it uses less digits than its factorization.

130199620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106791 (or 106789 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 130199620 is about 11410.5048091660. The cubic root of 130199620 is about 506.8388601782.

The spelling of 130199620 in words is "one hundred thirty million, one hundred ninety-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 106721 213442 426884 533605 1067210 2134420 6509981 13019962 26039924 32549905 65099810 130199620