72372726 has 24 divisors (see below), whose sum is σ = 157009320. Its totient is φ = 24093216.

The previous prime is 72372721. The next prime is 72372731. The reversal of 72372726 is 62727327.

It is an interprime number because it is at equal distance from previous prime (72372721) and next prime (72372731).

It is a super-2 number, since 2×72372726² = 10475622937342152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72372721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15045 + ... + 19263.

It is an arithmetic number, because the mean of its divisors is an integer number (6542055).

Almost surely, 2^72372726 is an apocalyptic number.

72372726 is an abundant number, since it is smaller than the sum of its proper divisors (84636594).

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

72372726 is a wasteful number, since it uses less digits than its factorization.

72372726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180 (or 5177 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 72372726 is about 8507.2161133946. The cubic root of 72372726 is about 416.7334010089.

The spelling of 72372726 in words is "seventy-two million, three hundred seventy-two thousand, seven hundred twenty-six".