72322940 has 12 divisors (see below), whose sum is σ = 151878216. Its totient is φ = 28929168.

The previous prime is 72322891. The next prime is 72322973. The reversal of 72322940 is 4922327.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808054 + ... + 1808093.

It is an arithmetic number, because the mean of its divisors is an integer number (12656518).

Almost surely, 2^72322940 is an apocalyptic number.

It is an amenable number.

72322940 is an abundant number, since it is smaller than the sum of its proper divisors (79555276).

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

72322940 is a wasteful number, since it uses less digits than its factorization.

72322940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616156 (or 3616154 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72322940 is about 8504.2895058905. The cubic root of 72322940 is about 416.6378205808.

The spelling of 72322940 in words is "seventy-two million, three hundred twenty-two thousand, nine hundred forty".