72838173320 has 32 divisors (see below), whose sum is σ = 178784608320. Its totient is φ = 26486608320.

The previous prime is 72838173281. The next prime is 72838173337. The reversal of 72838173320 is 2337183827.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 82770212 + ... + 82771091.

It is an arithmetic number, because the mean of its divisors is an integer number (5587019010).

Almost surely, 2^72838173320 is an apocalyptic number.

It is an amenable number.

72838173320 is an abundant number, since it is smaller than the sum of its proper divisors (105946435000).

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

72838173320 is a wasteful number, since it uses less digits than its factorization.

72838173320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165541325 (or 165541321 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 72838173320 in words is "seventy-two billion, eight hundred thirty-eight million, one hundred seventy-three thousand, three hundred twenty".