72528828 has 12 divisors (see below), whose sum is σ = 169233960. Its totient is φ = 24176272.

The previous prime is 72528823. The next prime is 72528839. The reversal of 72528828 is 82882527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 72528828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72528823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022023 + ... + 3022046.

It is an arithmetic number, because the mean of its divisors is an integer number (14102830).

Almost surely, 2^72528828 is an apocalyptic number.

It is an amenable number.

72528828 is an abundant number, since it is smaller than the sum of its proper divisors (96705132).

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

72528828 is a wasteful number, since it uses less digits than its factorization.

72528828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044076 (or 6044074 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The square root of 72528828 is about 8516.3858531656. The cubic root of 72528828 is about 417.0328057048.

The spelling of 72528828 in words is "seventy-two million, five hundred twenty-eight thousand, eight hundred twenty-eight".