72045580 has 12 divisors (see below), whose sum is σ = 151295760. Its totient is φ = 28818224.

The previous prime is 72045563. The next prime is 72045583. The reversal of 72045580 is 8554027.

It is not an unprimeable number, because it can be changed into a prime (72045583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801120 + ... + 1801159.

It is an arithmetic number, because the mean of its divisors is an integer number (12607980).

Almost surely, 2^72045580 is an apocalyptic number.

It is an amenable number.

72045580 is an abundant number, since it is smaller than the sum of its proper divisors (79250180).

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

72045580 is a wasteful number, since it uses less digits than its factorization.

72045580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602288 (or 3602286 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 72045580 is about 8487.9667765608. The cubic root of 72045580 is about 416.1045333335.

The spelling of 72045580 in words is "seventy-two million, forty-five thousand, five hundred eighty".