672156312 has 32 divisors (see below), whose sum is σ = 1768833600. Its totient is φ = 212259744.

The previous prime is 672156311. The next prime is 672156341. The reversal of 672156312 is 213651276.

It is a super-2 number, since 2×672156312² = 903588215522882688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672156311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736558 + ... + 737469.

It is an arithmetic number, because the mean of its divisors is an integer number (55276050).

Almost surely, 2^672156312 is an apocalyptic number.

It is an amenable number.

672156312 is an abundant number, since it is smaller than the sum of its proper divisors (1096677288).

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

672156312 is a wasteful number, since it uses less digits than its factorization.

672156312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474055 (or 1474051 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 672156312 is about 25925.9775514830. The cubic root of 672156312 is about 875.9717365415.

The spelling of 672156312 in words is "six hundred seventy-two million, one hundred fifty-six thousand, three hundred twelve".