72727292 has 36 divisors (see below), whose sum is σ = 148140720. Its totient is φ = 31109760.

The previous prime is 72727247. The next prime is 72727301. The reversal of 72727292 is 29272727.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3809 + ... + 12647.

It is an arithmetic number, because the mean of its divisors is an integer number (4115020).

Almost surely, 2^72727292 is an apocalyptic number.

It is an amenable number.

72727292 is an abundant number, since it is smaller than the sum of its proper divisors (75413428).

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

72727292 is a wasteful number, since it uses less digits than its factorization.

72727292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8882 (or 8869 counting only the distinct ones).

The product of its digits is 49392, while the sum is 38.

The square root of 72727292 is about 8528.0297841881. The cubic root of 72727292 is about 417.4128413561.

The spelling of 72727292 in words is "seventy-two million, seven hundred twenty-seven thousand, two hundred ninety-two".