72107272220 has 24 divisors (see below), whose sum is σ = 151452725424. Its totient is φ = 28837679616.

The previous prime is 72107272213. The next prime is 72107272247. The reversal of 72107272220 is 2227270127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212789 + ... + 435308.

It is an arithmetic number, because the mean of its divisors is an integer number (6310530226).

Almost surely, 2^72107272220 is an apocalyptic number.

It is an amenable number.

72107272220 is an abundant number, since it is smaller than the sum of its proper divisors (79345453204).

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

72107272220 is a wasteful number, since it uses less digits than its factorization.

72107272220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653669 (or 653667 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The spelling of 72107272220 in words is "seventy-two billion, one hundred seven million, two hundred seventy-two thousand, two hundred twenty".