72217876 has 12 divisors (see below), whose sum is σ = 126735840. Its totient is φ = 36007640.

The previous prime is 72217837. The next prime is 72217877. The reversal of 72217876 is 67871227.

It is a super-2 number, since 2×72217876² = 10430843227902752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72217877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23710 + ... + 26581.

It is an arithmetic number, because the mean of its divisors is an integer number (10561320).

Almost surely, 2^72217876 is an apocalyptic number.

It is an amenable number.

72217876 is a deficient number, since it is larger than the sum of its proper divisors (54517964).

72217876 is a wasteful number, since it uses less digits than its factorization.

72217876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50654 (or 50652 counting only the distinct ones).

The product of its digits is 65856, while the sum is 40.

The square root of 72217876 is about 8498.1101428494. The cubic root of 72217876 is about 416.4359719933.

The spelling of 72217876 in words is "seventy-two million, two hundred seventeen thousand, eight hundred seventy-six".