72232217 has 8 divisors (see below), whose sum is σ = 74295936. Its totient is φ = 70186032.

The previous prime is 72232187. The next prime is 72232247. The reversal of 72232217 is 71223227.

It is an interprime number because it is at equal distance from previous prime (72232187) and next prime (72232247).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72232217 - 2²² = 68037913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72232247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4208 + ... + 12734.

It is an arithmetic number, because the mean of its divisors is an integer number (9286992).

Almost surely, 2^72232217 is an apocalyptic number.

It is an amenable number.

72232217 is a deficient number, since it is larger than the sum of its proper divisors (2063719).

72232217 is a wasteful number, since it uses less digits than its factorization.

72232217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8767.

The product of its digits is 2352, while the sum is 26.

The square root of 72232217 is about 8498.9538768015. The cubic root of 72232217 is about 416.4635354043.

The spelling of 72232217 in words is "seventy-two million, two hundred thirty-two thousand, two hundred seventeen".