172939056 has 20 divisors (see below), whose sum is σ = 446759352. Its totient is φ = 57646336.

The previous prime is 172939051. The next prime is 172939061. The reversal of 172939056 is 650939271.

172939056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172939051) and next prime (172939061).

It is a super-2 number, since 2×172939056² = 59815834180342272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172938999 and 172939017.

It is not an unprimeable number, because it can be changed into a prime (172939051) 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, 1801401 + ... + 1801496.

Almost surely, 2^172939056 is an apocalyptic number.

172939056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172939056 is an abundant number, since it is smaller than the sum of its proper divisors (273820296).

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

172939056 is a wasteful number, since it uses less digits than its factorization.

172939056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602908 (or 3602902 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 172939056 is about 13150.6294906366. The cubic root of 172939056 is about 557.1400275615.

The spelling of 172939056 in words is "one hundred seventy-two million, nine hundred thirty-nine thousand, fifty-six".