72990039828 has 24 divisors (see below), whose sum is σ = 171817265088. Its totient is φ = 24114702976.

The previous prime is 72990039827. The next prime is 72990039847. The reversal of 72990039828 is 82893009927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72990039827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26912376 + ... + 26915087.

It is an arithmetic number, because the mean of its divisors is an integer number (7159052712).

Almost surely, 2^72990039828 is an apocalyptic number.

It is an amenable number.

72990039828 is an abundant number, since it is smaller than the sum of its proper divisors (98827225260).

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

72990039828 is a wasteful number, since it uses less digits than its factorization.

72990039828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53827583 (or 53827581 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 72990039828 in words is "seventy-two billion, nine hundred ninety million, thirty-nine thousand, eight hundred twenty-eight".