72108780 has 24 divisors (see below), whose sum is σ = 201904752. Its totient is φ = 19228992.

The previous prime is 72108739. The next prime is 72108793. The reversal of 72108780 is 8780127.

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, 600847 + ... + 600966.

It is an arithmetic number, because the mean of its divisors is an integer number (8412698).

Almost surely, 2^72108780 is an apocalyptic number.

It is an amenable number.

72108780 is an abundant number, since it is smaller than the sum of its proper divisors (129795972).

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

72108780 is a wasteful number, since it uses less digits than its factorization.

72108780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201825 (or 1201823 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 72108780 is about 8491.6888779559. The cubic root of 72108780 is about 416.2261698520.

The spelling of 72108780 in words is "seventy-two million, one hundred eight thousand, seven hundred eighty".