9121288 has 16 divisors (see below), whose sum is σ = 18657360. Its totient is φ = 4146000.

The previous prime is 9121279. The next prime is 9121291. The reversal of 9121288 is 8821219.

It is a happy number.

It is a super-3 number, since 3×9121288³ (a number of 22 digits) contains 333 as substring.

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, 51738 + ... + 51913.

It is an arithmetic number, because the mean of its divisors is an integer number (1166085).

Almost surely, 2^9121288 is an apocalyptic number.

It is an amenable number.

9121288 is an abundant number, since it is smaller than the sum of its proper divisors (9536072).

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

9121288 is a wasteful number, since it uses less digits than its factorization.

9121288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103668 (or 103664 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 9121288 is about 3020.1470162891. The cubic root of 9121288 is about 208.9386204379.

It can be divided in two parts, 9121 and 288, that added together give a square (9409 = 97²).

The spelling of 9121288 in words is "nine million, one hundred twenty-one thousand, two hundred eighty-eight".