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130120232 = 23111478639
BaseRepresentation
bin1111100000101…
…11101000101000
3100001211210101212
413300113220220
5231302321412
620524532252
73140001164
oct760275050
9301753355
10130120232
11674a4290
12376b1088
1320c5b428
14133d1ca4
15b654222
hex7c17a28

130120232 has 16 divisors (see below), whose sum is σ = 266155200. Its totient is φ = 59145520.

The previous prime is 130120229. The next prime is 130120241. The reversal of 130120232 is 232021031.

It is a happy number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739232 + ... + 739407.

It is an arithmetic number, because the mean of its divisors is an integer number (16634700).

Almost surely, 2130120232 is an apocalyptic number.

It is an amenable number.

130120232 is an abundant number, since it is smaller than the sum of its proper divisors (136034968).

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

130120232 is a wasteful number, since it uses less digits than its factorization.

130120232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478656 (or 1478652 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 130120232 is about 11407.0255544555. The cubic root of 130120232 is about 506.7358258165.

Adding to 130120232 its reverse (232021031), we get a palindrome (362141263).

The spelling of 130120232 in words is "one hundred thirty million, one hundred twenty thousand, two hundred thirty-two".

Divisors: 1 2 4 8 11 22 44 88 1478639 2957278 5914556 11829112 16265029 32530058 65060116 130120232