9002172 has 24 divisors (see below), whose sum is σ = 21243600. Its totient is φ = 2966656.

The previous prime is 9002171. The next prime is 9002233. The reversal of 9002172 is 2712009.

It is a happy number.

9002172 is digitally balanced in base 2, base 4 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9002171) 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, 3147 + ... + 5282.

It is an arithmetic number, because the mean of its divisors is an integer number (885150).

Almost surely, 2^9002172 is an apocalyptic number.

It is an amenable number.

9002172 is an abundant number, since it is smaller than the sum of its proper divisors (12241428).

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

9002172 is a wasteful number, since it uses less digits than its factorization.

9002172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525 (or 8523 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 9002172 is about 3000.3619781620. The cubic root of 9002172 is about 208.0251140780.

The spelling of 9002172 in words is "nine million, two thousand, one hundred seventy-two".