72723760 has 20 divisors (see below), whose sum is σ = 169082928. Its totient is φ = 29089472.

The previous prime is 72723757. The next prime is 72723767. The reversal of 72723760 is 6732727.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (72723767) 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, 454444 + ... + 454603.

Almost surely, 2^72723760 is an apocalyptic number.

It is an amenable number.

72723760 is an abundant number, since it is smaller than the sum of its proper divisors (96359168).

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

72723760 is a wasteful number, since it uses less digits than its factorization.

72723760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909060 (or 909054 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 72723760 is about 8527.8226998455. The cubic root of 72723760 is about 417.4060840303.

The spelling of 72723760 in words is "seventy-two million, seven hundred twenty-three thousand, seven hundred sixty".