2972645172 has 72 divisors (see below), whose sum is σ = 8762936000. Its totient is φ = 849323664.

The previous prime is 2972645153. The next prime is 2972645173. The reversal of 2972645172 is 2715462792.

2972645172 is a `hidden beast` number, since 2 + 9 + 72 + 64 + 517 + 2 = 666.

It is a super-2 number, since 2×2972645172² = 17673238637229819168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972645173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108022 + ... + 132717.

Almost surely, 2^2972645172 is an apocalyptic number.

It is an amenable number.

2972645172 is an abundant number, since it is smaller than the sum of its proper divisors (5790290828).

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

2972645172 is a wasteful number, since it uses less digits than its factorization.

2972645172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240770 (or 240751 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 2972645172 is about 54521.9696269311. The cubic root of 2972645172 is about 1437.8525688647.

The spelling of 2972645172 in words is "two billion, nine hundred seventy-two million, six hundred forty-five thousand, one hundred seventy-two".