72657336 has 16 divisors (see below), whose sum is σ = 181643400. Its totient is φ = 24219104.

The previous prime is 72657331. The next prime is 72657373. The reversal of 72657336 is 63375627.

It is a junction number, because it is equal to n+sod(n) for n = 72657294 and 72657303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72657331) 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, 1513671 + ... + 1513718.

Almost surely, 2^72657336 is an apocalyptic number.

It is an amenable number.

72657336 is an abundant number, since it is smaller than the sum of its proper divisors (108986064).

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

72657336 is a wasteful number, since it uses less digits than its factorization.

72657336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027398 (or 3027394 counting only the distinct ones).

The product of its digits is 158760, while the sum is 39.

The square root of 72657336 is about 8523.9272638849. The cubic root of 72657336 is about 417.2789626817.

The spelling of 72657336 in words is "seventy-two million, six hundred fifty-seven thousand, three hundred thirty-six".