72164526 has 16 divisors (see below), whose sum is σ = 164947584. Its totient is φ = 20618424.

The previous prime is 72164513. The next prime is 72164539. The reversal of 72164526 is 62546127.

It is an interprime number because it is at equal distance from previous prime (72164513) and next prime (72164539).

It is a congruent number.

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, 859060 + ... + 859143.

It is an arithmetic number, because the mean of its divisors is an integer number (10309224).

Almost surely, 2^72164526 is an apocalyptic number.

72164526 is an abundant number, since it is smaller than the sum of its proper divisors (92783058).

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

72164526 is a wasteful number, since it uses less digits than its factorization.

72164526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718215.

The product of its digits is 20160, while the sum is 33.

The square root of 72164526 is about 8494.9706297315. The cubic root of 72164526 is about 416.3334012108. Note that the first 3 decimals are identical.

The spelling of 72164526 in words is "seventy-two million, one hundred sixty-four thousand, five hundred twenty-six".