9221280 has 48 divisors (see below), whose sum is σ = 29048544. Its totient is φ = 2458880.

The previous prime is 9221257. The next prime is 9221297. The reversal of 9221280 is 821229.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9221280.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9126 + ... + 10085.

It is an arithmetic number, because the mean of its divisors is an integer number (605178).

Almost surely, 2^9221280 is an apocalyptic number.

It is an amenable number.

9221280 is an abundant number, since it is smaller than the sum of its proper divisors (19827264).

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

9221280 is a wasteful number, since it uses less digits than its factorization.

9221280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19229 (or 19221 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 9221280 is about 3036.6560555980. The cubic root of 9221280 is about 209.6993429974.

The spelling of 9221280 in words is "nine million, two hundred twenty-one thousand, two hundred eighty".