72324642 has 32 divisors (see below), whose sum is σ = 156143232. Its totient is φ = 22201344.

The previous prime is 72324631. The next prime is 72324653. The reversal of 72324642 is 24642327.

It is an interprime number because it is at equal distance from previous prime (72324631) and next prime (72324653).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44203 + ... + 45809.

It is an arithmetic number, because the mean of its divisors is an integer number (4879476).

Almost surely, 2^72324642 is an apocalyptic number.

72324642 is an abundant number, since it is smaller than the sum of its proper divisors (83818590).

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

72324642 is a wasteful number, since it uses less digits than its factorization.

72324642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its digits is 16128, while the sum is 30.

The square root of 72324642 is about 8504.3895724502. The cubic root of 72324642 is about 416.6410888477.

Adding to 72324642 its reverse (24642327), we get a palindrome (96966969).

The spelling of 72324642 in words is "seventy-two million, three hundred twenty-four thousand, six hundred forty-two".