72839828 has 24 divisors (see below), whose sum is σ = 131561472. Its totient is φ = 35260704.

The previous prime is 72839797. The next prime is 72839831. The reversal of 72839828 is 82893827.

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, 31901 + ... + 34107.

It is an arithmetic number, because the mean of its divisors is an integer number (5481728).

Almost surely, 2^72839828 is an apocalyptic number.

It is an amenable number.

72839828 is a deficient number, since it is larger than the sum of its proper divisors (58721644).

72839828 is a wasteful number, since it uses less digits than its factorization.

72839828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2469 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 72839828 is about 8534.6252407472. The cubic root of 72839828 is about 417.6280277157.

The spelling of 72839828 in words is "seventy-two million, eight hundred thirty-nine thousand, eight hundred twenty-eight".