72104256 has 140 divisors (see below), whose sum is σ = 244396768. Its totient is φ = 20590848.

The previous prime is 72104239. The next prime is 72104269. The reversal of 72104256 is 65240127.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35295 + ... + 37281.

Almost surely, 2^72104256 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 72104256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122198384).

72104256 is an abundant number, since it is smaller than the sum of its proper divisors (172292512).

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

72104256 is a wasteful number, since it uses less digits than its factorization.

72104256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 72104256 is about 8491.4224956717. The cubic root of 72104256 is about 416.2174651951.

The spelling of 72104256 in words is "seventy-two million, one hundred four thousand, two hundred fifty-six".