9281920 has 32 divisors (see below), whose sum is σ = 22191120. Its totient is φ = 3712512.

The previous prime is 9281897. The next prime is 9281953. The reversal of 9281920 is 291829.

It is a tau number, because it is divible by the number of its divisors (32).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6612 + ... + 7891.

Almost surely, 2^9281920 is an apocalyptic number.

It is an amenable number.

9281920 is an abundant number, since it is smaller than the sum of its proper divisors (12909200).

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

9281920 is a wasteful number, since it uses less digits than its factorization.

9281920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14522 (or 14510 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9281920 is about 3046.6243614860. The cubic root of 9281920 is about 210.1580065565.

It can be divided in two parts, 9281 and 920, that added together give a palindrome (10201).

The spelling of 9281920 in words is "nine million, two hundred eighty-one thousand, nine hundred twenty".