72884660 has 24 divisors (see below), whose sum is σ = 155157576. Its totient is φ = 28753920.

The previous prime is 72884659. The next prime is 72884687. The reversal of 72884660 is 6648827.

It can be written as a sum of positive squares in 4 ways, for example, as 21418384 + 51466276 = 4628^2 + 7174^2 .

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, 23501 + ... + 26420.

It is an arithmetic number, because the mean of its divisors is an integer number (6464899).

Almost surely, 2^72884660 is an apocalyptic number.

It is an amenable number.

72884660 is an abundant number, since it is smaller than the sum of its proper divisors (82272916).

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

72884660 is a wasteful number, since it uses less digits than its factorization.

72884660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50003 (or 50001 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 72884660 is about 8537.2513140940. The cubic root of 72884660 is about 417.7136917463.

Adding to 72884660 its sum of digits (41), we get a triangular number (72884701 = T₁₂₀₇₃).

The spelling of 72884660 in words is "seventy-two million, eight hundred eighty-four thousand, six hundred sixty".