72875538 has 40 divisors (see below), whose sum is σ = 163785600. Its totient is φ = 24219000.

The previous prime is 72875531. The next prime is 72875563. The reversal of 72875538 is 83557827.

It is a junction number, because it is equal to n+sod(n) for n = 72875493 and 72875502.

It is not an unprimeable number, because it can be changed into a prime (72875531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96663 + ... + 97413.

It is an arithmetic number, because the mean of its divisors is an integer number (4094640).

Almost surely, 2^72875538 is an apocalyptic number.

72875538 is an abundant number, since it is smaller than the sum of its proper divisors (90910062).

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

72875538 is a wasteful number, since it uses less digits than its factorization.

72875538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1355 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 72875538 is about 8536.7170504826. The cubic root of 72875538 is about 417.6962644703.

The spelling of 72875538 in words is "seventy-two million, eight hundred seventy-five thousand, five hundred thirty-eight".