130172256 has 36 divisors (see below), whose sum is σ = 370178172. Its totient is φ = 43390656.

The previous prime is 130172239. The next prime is 130172261. The reversal of 130172256 is 652271031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 225706 + ... + 226281.

It is an arithmetic number, because the mean of its divisors is an integer number (10282727).

Almost surely, 2^130172256 is an apocalyptic number.

130172256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

130172256 is an abundant number, since it is smaller than the sum of its proper divisors (240005916).

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

130172256 is a wasteful number, since it uses less digits than its factorization.

130172256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452003 (or 451992 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 130172256 is about 11409.3056756316. The cubic root of 130172256 is about 506.8033503195.

The spelling of 130172256 in words is "one hundred thirty million, one hundred seventy-two thousand, two hundred fifty-six".