9172656 has 80 divisors (see below), whose sum is σ = 27900000. Its totient is φ = 2875392.

The previous prime is 9172637. The next prime is 9172663. The reversal of 9172656 is 6562719.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9172656.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6720 + ... + 7968.

It is an arithmetic number, because the mean of its divisors is an integer number (348750).

Almost surely, 2^9172656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9172656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13950000).

9172656 is an abundant number, since it is smaller than the sum of its proper divisors (18727344).

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

9172656 is a wasteful number, since it uses less digits than its factorization.

9172656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1271 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 9172656 is about 3028.6392984309. The cubic root of 9172656 is about 209.3301102546.

The spelling of 9172656 in words is "nine million, one hundred seventy-two thousand, six hundred fifty-six".