72220475 has 12 divisors (see below), whose sum is σ = 91738920. Its totient is φ = 56366400.

The previous prime is 72220459. The next prime is 72220487. The reversal of 72220475 is 57402227.

It is not a de Polignac number, because 72220475 - 2⁴ = 72220459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34205 + ... + 36254.

It is an arithmetic number, because the mean of its divisors is an integer number (7644910).

Almost surely, 2^72220475 is an apocalyptic number.

72220475 is a deficient number, since it is larger than the sum of its proper divisors (19518445).

72220475 is a wasteful number, since it uses less digits than its factorization.

72220475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70510 (or 70505 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72220475 is about 8498.2630578254. The cubic root of 72220475 is about 416.4409675436.

The spelling of 72220475 in words is "seventy-two million, two hundred twenty thousand, four hundred seventy-five".