130643556 has 12 divisors (see below), whose sum is σ = 304834992. Its totient is φ = 43547848.

The previous prime is 130643551. The next prime is 130643561. The reversal of 130643556 is 655346031.

It is an interprime number because it is at equal distance from previous prime (130643551) and next prime (130643561).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (130643551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5443470 + ... + 5443493.

It is an arithmetic number, because the mean of its divisors is an integer number (25402916).

Almost surely, 2^130643556 is an apocalyptic number.

It is an amenable number.

130643556 is an abundant number, since it is smaller than the sum of its proper divisors (174191436).

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

130643556 is a wasteful number, since it uses less digits than its factorization.

130643556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10886970 (or 10886968 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 130643556 is about 11429.9412071979. The cubic root of 130643556 is about 507.4142555358.

Adding to 130643556 its reverse (655346031), we get a palindrome (785989587).

The spelling of 130643556 in words is "one hundred thirty million, six hundred forty-three thousand, five hundred fifty-six".