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130023340 = 22517337579
BaseRepresentation
bin1111011111111…
…11111110101100
3100001122212111021
413233333332230
5231241221330
620522503524
73136115536
oct757777654
9301585437
10130023340
1167438507
1237664ba4
1320c262b5
14133a8856
15b63567a
hex7bfffac

130023340 has 24 divisors (see below), whose sum is σ = 274634640. Its totient is φ = 51707328.

The previous prime is 130023323. The next prime is 130023343. The reversal of 130023340 is 43320031.

It is not an unprimeable number, because it can be changed into a prime (130023343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15330 + ... + 22249.

It is an arithmetic number, because the mean of its divisors is an integer number (11443110).

Almost surely, 2130023340 is an apocalyptic number.

130023340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130023340 is an abundant number, since it is smaller than the sum of its proper divisors (144611300).

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

130023340 is a wasteful number, since it uses less digits than its factorization.

130023340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37761 (or 37759 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 130023340 is about 11402.7777317634. Note that the first 4 decimals coincide. The cubic root of 130023340 is about 506.6100169427.

Adding to 130023340 its reverse (43320031), we get a palindrome (173343371).

The spelling of 130023340 in words is "one hundred thirty million, twenty-three thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 173 346 692 865 1730 3460 37579 75158 150316 187895 375790 751580 6501167 13002334 26004668 32505835 65011670 130023340