72767172 has 12 divisors (see below), whose sum is σ = 169790096. Its totient is φ = 24255720.

The previous prime is 72767171. The next prime is 72767183. The reversal of 72767172 is 27176727.

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

It is a super-2 number, since 2×72767172² = 10590122641755168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72767172.

It is not an unprimeable number, because it can be changed into a prime (72767171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031954 + ... + 3031977.

Almost surely, 2^72767172 is an apocalyptic number.

It is an amenable number.

72767172 is an abundant number, since it is smaller than the sum of its proper divisors (97022924).

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

72767172 is a wasteful number, since it uses less digits than its factorization.

72767172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063938 (or 6063936 counting only the distinct ones).

The product of its digits is 57624, while the sum is 39.

The square root of 72767172 is about 8530.3676356884. The cubic root of 72767172 is about 417.4891235050.

The spelling of 72767172 in words is "seventy-two million, seven hundred sixty-seven thousand, one hundred seventy-two".