72681296 has 10 divisors (see below), whose sum is σ = 140820042. Its totient is φ = 36340640.

The previous prime is 72681281. The next prime is 72681331. The reversal of 72681296 is 69218627.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 1784896 = 8420^2 + 1336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271275 + ... + 2271306.

Almost surely, 2^72681296 is an apocalyptic number.

It is an amenable number.

72681296 is a deficient number, since it is larger than the sum of its proper divisors (68138746).

72681296 is a wasteful number, since it uses less digits than its factorization.

72681296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542589 (or 4542583 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 72681296 is about 8525.3326034824. The cubic root of 72681296 is about 417.3248259337.

The spelling of 72681296 in words is "seventy-two million, six hundred eighty-one thousand, two hundred ninety-six".