72227592 has 32 divisors (see below), whose sum is σ = 200632800. Its totient is φ = 24075792.

The previous prime is 72227591. The next prime is 72227593. The reversal of 72227592 is 29572227.

It is an interprime number because it is at equal distance from previous prime (72227591) and next prime (72227593).

It is a super-2 number, since 2×72227592² = 10433650092236928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72227591) 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, 166978 + ... + 167409.

It is an arithmetic number, because the mean of its divisors is an integer number (6269775).

Almost surely, 2^72227592 is an apocalyptic number.

72227592 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72227592 is an abundant number, since it is smaller than the sum of its proper divisors (128405208).

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

72227592 is a wasteful number, since it uses less digits than its factorization.

72227592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334402 (or 334392 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 72227592 is about 8498.6817801351. The cubic root of 72227592 is about 416.4546465500.

The spelling of 72227592 in words is "seventy-two million, two hundred twenty-seven thousand, five hundred ninety-two".