72817850 has 48 divisors (see below), whose sum is σ = 159001728. Its totient is φ = 24287040.

The previous prime is 72817841. The next prime is 72817873. The reversal of 72817850 is 5871827.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10139 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (3312536).

Almost surely, 2^72817850 is an apocalyptic number.

72817850 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72817850 is an abundant number, since it is smaller than the sum of its proper divisors (86183878).

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

72817850 is a wasteful number, since it uses less digits than its factorization.

72817850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5679 (or 5674 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 72817850 is about 8533.3375651031. The cubic root of 72817850 is about 417.5860197815.

The spelling of 72817850 in words is "seventy-two million, eight hundred seventeen thousand, eight hundred fifty".