9172880 has 20 divisors (see below), whose sum is σ = 21327132. Its totient is φ = 3669120.

The previous prime is 9172873. The next prime is 9172913. The reversal of 9172880 is 882719.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3489424 + 5683456 = 1868^2 + 2384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 9172880.

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 3 ways as a sum of consecutive naturals, for example, 57251 + ... + 57410.

Almost surely, 2^9172880 is an apocalyptic number.

It is an amenable number.

9172880 is an abundant number, since it is smaller than the sum of its proper divisors (12154252).

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

9172880 is a wasteful number, since it uses less digits than its factorization.

9172880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114674 (or 114668 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 9172880 is about 3028.6762785085. The cubic root of 9172880 is about 209.3318142163.

The spelling of 9172880 in words is "nine million, one hundred seventy-two thousand, eight hundred eighty".