72259992 has 64 divisors (see below), whose sum is σ = 229401600. Its totient is φ = 20645280.

The previous prime is 72259991. The next prime is 72260003. The reversal of 72259992 is 29995227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72259991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22384 + ... + 25407.

It is an arithmetic number, because the mean of its divisors is an integer number (3584400).

Almost surely, 2^72259992 is an apocalyptic number.

72259992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72259992 is an abundant number, since it is smaller than the sum of its proper divisors (157141608).

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

72259992 is a wasteful number, since it uses less digits than its factorization.

72259992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47813 (or 47803 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 72259992 is about 8500.5877443857. The cubic root of 72259992 is about 416.5169085983.

The spelling of 72259992 in words is "seventy-two million, two hundred fifty-nine thousand, nine hundred ninety-two".