72207164 has 24 divisors (see below), whose sum is σ = 129418800. Its totient is φ = 35239680.

The previous prime is 72207133. The next prime is 72207169. The reversal of 72207164 is 46170227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72207169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32852 + ... + 34980.

It is an arithmetic number, because the mean of its divisors is an integer number (5392450).

Almost surely, 2^72207164 is an apocalyptic number.

It is an amenable number.

72207164 is a deficient number, since it is larger than the sum of its proper divisors (57211636).

72207164 is a wasteful number, since it uses less digits than its factorization.

72207164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72207164 is about 8497.4798617002. The cubic root of 72207164 is about 416.4153811416.

The spelling of 72207164 in words is "seventy-two million, two hundred seven thousand, one hundred sixty-four".