72275972 has 12 divisors (see below), whose sum is σ = 128556876. Its totient is φ = 35545440.

The previous prime is 72275963. The next prime is 72276011. The reversal of 72275972 is 27957227.

It can be written as a sum of positive squares in 2 ways, for example, as 20666116 + 51609856 = 4546^2 + 7184^2 .

It is a super-2 number, since 2×72275972² = 10447632257089568, which contains 22 as substring.

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, 147863 + ... + 148350.

It is an arithmetic number, because the mean of its divisors is an integer number (10713073).

Almost surely, 2^72275972 is an apocalyptic number.

It is an amenable number.

72275972 is a deficient number, since it is larger than the sum of its proper divisors (56280904).

72275972 is a wasteful number, since it uses less digits than its factorization.

72275972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296278 (or 296276 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The square root of 72275972 is about 8501.5276274326. The cubic root of 72275972 is about 416.5476100022.

The spelling of 72275972 in words is "seventy-two million, two hundred seventy-five thousand, nine hundred seventy-two".