72536456 has 8 divisors (see below), whose sum is σ = 136005870. Its totient is φ = 36268224.

The previous prime is 72536447. The next prime is 72536459. The reversal of 72536456 is 65463527.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 18748900 = 7334^2 + 4330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72536459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4533521 + ... + 4533536.

Almost surely, 2^72536456 is an apocalyptic number.

It is an amenable number.

72536456 is a deficient number, since it is larger than the sum of its proper divisors (63469414).

72536456 is a wasteful number, since it uses less digits than its factorization.

72536456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067063 (or 9067059 counting only the distinct ones).

The product of its digits is 151200, while the sum is 38.

The square root of 72536456 is about 8516.8336839462. The cubic root of 72536456 is about 417.0474252468.

The spelling of 72536456 in words is "seventy-two million, five hundred thirty-six thousand, four hundred fifty-six".