72013980 has 24 divisors (see below), whose sum is σ = 201639312. Its totient is φ = 19203712.

The previous prime is 72013979. The next prime is 72013993. The reversal of 72013980 is 8931027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 600057 + ... + 600176.

It is an arithmetic number, because the mean of its divisors is an integer number (8401638).

Almost surely, 2^72013980 is an apocalyptic number.

It is an amenable number.

72013980 is an abundant number, since it is smaller than the sum of its proper divisors (129625332).

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

72013980 is a wasteful number, since it uses less digits than its factorization.

72013980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200245 (or 1200243 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 72013980 is about 8486.1051136549. The cubic root of 72013980 is about 416.0436883974.

The spelling of 72013980 in words is "seventy-two million, thirteen thousand, nine hundred eighty".