72292420 has 24 divisors (see below), whose sum is σ = 152062848. Its totient is φ = 28869600.

The previous prime is 72292387. The next prime is 72292433. The reversal of 72292420 is 2429227.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11205 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (6335952).

Almost surely, 2^72292420 is an apocalyptic number.

It is an amenable number.

72292420 is an abundant number, since it is smaller than the sum of its proper divisors (79770428).

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

72292420 is a wasteful number, since it uses less digits than its factorization.

72292420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931 (or 5929 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 72292420 is about 8502.4949279609. The cubic root of 72292420 is about 416.5792058205.

The spelling of 72292420 in words is "seventy-two million, two hundred ninety-two thousand, four hundred twenty".