672040172 has 12 divisors (see below), whose sum is σ = 1195350576. Its totient is φ = 330511440.

The previous prime is 672040133. The next prime is 672040183. The reversal of 672040172 is 271040276.

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, 1376888 + ... + 1377375.

It is an arithmetic number, because the mean of its divisors is an integer number (99612548).

Almost surely, 2^672040172 is an apocalyptic number.

It is an amenable number.

672040172 is a deficient number, since it is larger than the sum of its proper divisors (523310404).

672040172 is a wasteful number, since it uses less digits than its factorization.

672040172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754328 (or 2754326 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 672040172 is about 25923.7376163238. The cubic root of 672040172 is about 875.9212814039.

The spelling of 672040172 in words is "six hundred seventy-two million, forty thousand, one hundred seventy-two".