72728270 has 32 divisors (see below), whose sum is σ = 134424576. Its totient is φ = 28317600.

The previous prime is 72728239. The next prime is 72728309. The reversal of 72728270 is 7282727.

It is a self number, because there is not a number n which added to its sum of digits gives 72728270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127085 + ... + 127655.

It is an arithmetic number, because the mean of its divisors is an integer number (4200768).

Almost surely, 2^72728270 is an apocalyptic number.

72728270 is a deficient number, since it is larger than the sum of its proper divisors (61696306).

72728270 is a wasteful number, since it uses less digits than its factorization.

72728270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 72728270 is about 8528.0871243204. The cubic root of 72728270 is about 417.4147124003.

The spelling of 72728270 in words is "seventy-two million, seven hundred twenty-eight thousand, two hundred seventy".