72432252 has 24 divisors (see below), whose sum is σ = 187787600. Its totient is φ = 24144048.

The previous prime is 72432247. The next prime is 72432263. The reversal of 72432252 is 25223427.

It is a super-2 number, since 2×72432252² = 10492862259583008, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335227 + ... + 335442.

Almost surely, 2^72432252 is an apocalyptic number.

It is an amenable number.

72432252 is an abundant number, since it is smaller than the sum of its proper divisors (115355348).

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

72432252 is a wasteful number, since it uses less digits than its factorization.

72432252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670682 (or 670674 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 72432252 is about 8510.7139535999. The cubic root of 72432252 is about 416.8476230179.

Adding to 72432252 its reverse (25223427), we get a palindrome (97655679).

The spelling of 72432252 in words is "seventy-two million, four hundred thirty-two thousand, two hundred fifty-two".