72390024 has 80 divisors (see below), whose sum is σ = 231739200. Its totient is φ = 20681568.

The previous prime is 72390007. The next prime is 72390041. The reversal of 72390024 is 42009327.

It is an interprime number because it is at equal distance from previous prime (72390007) and next prime (72390041).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 72390024.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3444 + ... + 12515.

It is an arithmetic number, because the mean of its divisors is an integer number (2896740).

Almost surely, 2^72390024 is an apocalyptic number.

It is an amenable number.

72390024 is an abundant number, since it is smaller than the sum of its proper divisors (159349176).

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

72390024 is a wasteful number, since it uses less digits than its factorization.

72390024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984 (or 15971 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 72390024 is about 8508.2327189611. The cubic root of 72390024 is about 416.7665998879.

The spelling of 72390024 in words is "seventy-two million, three hundred ninety thousand, twenty-four".