72772372 has 12 divisors (see below), whose sum is σ = 127413076. Its totient is φ = 36368640.

The previous prime is 72772369. The next prime is 72772409. The reversal of 72772372 is 27327727.

It can be written as a sum of positive squares in 2 ways, for example, as 34999056 + 37773316 = 5916^2 + 6146^2 .

It is a congruent number.

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, 10738 + ... + 16150.

Almost surely, 2^72772372 is an apocalyptic number.

It is an amenable number.

72772372 is a deficient number, since it is larger than the sum of its proper divisors (54640704).

72772372 is a wasteful number, since it uses less digits than its factorization.

72772372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8778 (or 8776 counting only the distinct ones).

The product of its digits is 57624, while the sum is 37.

The square root of 72772372 is about 8530.6724236721. The cubic root of 72772372 is about 417.4990679698.

The spelling of 72772372 in words is "seventy-two million, seven hundred seventy-two thousand, three hundred seventy-two".