72884538 has 24 divisors (see below), whose sum is σ = 159164928. Its totient is φ = 24102792.

The previous prime is 72884533. The next prime is 72884579. The reversal of 72884538 is 83548827.

It is a junction number, because it is equal to n+sod(n) for n = 72884493 and 72884502.

It is not an unprimeable number, because it can be changed into a prime (72884533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13656 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (6631872).

Almost surely, 2^72884538 is an apocalyptic number.

72884538 is an abundant number, since it is smaller than the sum of its proper divisors (86280390).

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

72884538 is a wasteful number, since it uses less digits than its factorization.

72884538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32018 (or 32015 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 72884538 is about 8537.2441689341. The cubic root of 72884538 is about 417.7134586790.

The spelling of 72884538 in words is "seventy-two million, eight hundred eighty-four thousand, five hundred thirty-eight".