172745672 has 16 divisors (see below), whose sum is σ = 353343600. Its totient is φ = 78520720.

The previous prime is 172745623. The next prime is 172745693. The reversal of 172745672 is 276547271.

172745672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 981422 + ... + 981597.

It is an arithmetic number, because the mean of its divisors is an integer number (22083975).

Almost surely, 2^172745672 is an apocalyptic number.

It is an amenable number.

172745672 is an abundant number, since it is smaller than the sum of its proper divisors (180597928).

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

172745672 is a wasteful number, since it uses less digits than its factorization.

172745672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963036 (or 1963032 counting only the distinct ones).

The product of its digits is 164640, while the sum is 41.

The square root of 172745672 is about 13143.2747821842. The cubic root of 172745672 is about 556.9322816377.

The spelling of 172745672 in words is "one hundred seventy-two million, seven hundred forty-five thousand, six hundred seventy-two".