72217196 has 12 divisors (see below), whose sum is σ = 126910560. Its totient is φ = 35957040.

The previous prime is 72217183. The next prime is 72217231. The reversal of 72217196 is 69171227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36815 + ... + 38726.

It is an arithmetic number, because the mean of its divisors is an integer number (10575880).

Almost surely, 2^72217196 is an apocalyptic number.

It is an amenable number.

72217196 is a deficient number, since it is larger than the sum of its proper divisors (54693364).

72217196 is a wasteful number, since it uses less digits than its factorization.

72217196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75784 (or 75782 counting only the distinct ones).

The product of its digits is 10584, while the sum is 35.

The square root of 72217196 is about 8498.0701338598. The cubic root of 72217196 is about 416.4346649422.

The spelling of 72217196 in words is "seventy-two million, two hundred seventeen thousand, one hundred ninety-six".