22528331 has 8 divisors (see below), whose sum is σ = 26634720. Its totient is φ = 18643968.

The previous prime is 22528321. The next prime is 22528361. The reversal of 22528331 is 13382522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22528331 - 2²² = 18334027 is a prime.

It is a super-2 number, since 2×22528331² = 1015051395291122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22528331.

It is not an unprimeable number, because it can be changed into a prime (22528321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55286 + ... + 55691.

It is an arithmetic number, because the mean of its divisors is an integer number (3329340).

Almost surely, 2^22528331 is an apocalyptic number.

22528331 is a deficient number, since it is larger than the sum of its proper divisors (4106389).

22528331 is a wasteful number, since it uses less digits than its factorization.

22528331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111013.

The product of its digits is 2880, while the sum is 26.

The square root of 22528331 is about 4746.4019003873. The cubic root of 22528331 is about 282.4292500405.

The spelling of 22528331 in words is "twenty-two million, five hundred twenty-eight thousand, three hundred thirty-one".