156885972 has 12 divisors (see below), whose sum is σ = 366067296. Its totient is φ = 52295320.

The previous prime is 156885959. The next prime is 156885991. The reversal of 156885972 is 279588651.

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

It is a super-2 number, since 2×156885972² = 49226416420769568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6536904 + ... + 6536927.

It is an arithmetic number, because the mean of its divisors is an integer number (30505608).

Almost surely, 2^156885972 is an apocalyptic number.

156885972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

156885972 is an abundant number, since it is smaller than the sum of its proper divisors (209181324).

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

156885972 is a wasteful number, since it uses less digits than its factorization.

156885972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13073838 (or 13073836 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 51.

The square root of 156885972 is about 12525.4130470815. The cubic root of 156885972 is about 539.3384353770.

The spelling of 156885972 in words is "one hundred fifty-six million, eight hundred eighty-five thousand, nine hundred seventy-two".