9172572 has 12 divisors (see below), whose sum is σ = 21402696. Its totient is φ = 3057520.

The previous prime is 9172547. The next prime is 9172577. The reversal of 9172572 is 2752719.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382179 + ... + 382202.

It is an arithmetic number, because the mean of its divisors is an integer number (1783558).

Almost surely, 2^9172572 is an apocalyptic number.

It is an amenable number.

9172572 is an abundant number, since it is smaller than the sum of its proper divisors (12230124).

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

9172572 is a wasteful number, since it uses less digits than its factorization.

9172572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764388 (or 764386 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 9172572 is about 3028.6254307854. The cubic root of 9172572 is about 209.3294712618.

The spelling of 9172572 in words is "nine million, one hundred seventy-two thousand, five hundred seventy-two".