72904037824 has 56 divisors (see below), whose sum is σ = 148349165328. Its totient is φ = 35526543360.

The previous prime is 72904037813. The next prime is 72904037849. The reversal of 72904037824 is 42873040927.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2644399 + ... + 2671825.

It is an arithmetic number, because the mean of its divisors is an integer number (2649092238).

Almost surely, 2^72904037824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72904037824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74174582664).

72904037824 is an abundant number, since it is smaller than the sum of its proper divisors (75445127504).

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

72904037824 is a wasteful number, since it uses less digits than its factorization.

72904037824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28493 (or 28483 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 72904037824 in words is "seventy-two billion, nine hundred four million, thirty-seven thousand, eight hundred twenty-four".