72339528 has 16 divisors (see below), whose sum is σ = 180848880. Its totient is φ = 24113168.

The previous prime is 72339511. The next prime is 72339529. The reversal of 72339528 is 82593327.

It is a super-2 number, since 2×72339528² = 10466014622525568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72339529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507050 + ... + 1507097.

It is an arithmetic number, because the mean of its divisors is an integer number (11303055).

Almost surely, 2^72339528 is an apocalyptic number.

It is an amenable number.

72339528 is an abundant number, since it is smaller than the sum of its proper divisors (108509352).

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

72339528 is a wasteful number, since it uses less digits than its factorization.

72339528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014156 (or 3014152 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 72339528 is about 8505.2647225116. The cubic root of 72339528 is about 416.6696715161.

It can be divided in two parts, 7233 and 9528, that added together give a palindrome (16761).

The spelling of 72339528 in words is "seventy-two million, three hundred thirty-nine thousand, five hundred twenty-eight".