22515328 has 32 divisors (see below), whose sum is σ = 48935520. Its totient is φ = 10233600.

The previous prime is 22515319. The next prime is 22515329. The reversal of 22515328 is 82351522.

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

It is a junction number, because it is equal to n+sod(n) for n = 22515296 and 22515305.

It is not an unprimeable number, because it can be changed into a prime (22515329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6588 + ... + 9403.

It is an arithmetic number, because the mean of its divisors is an integer number (1529235).

Almost surely, 2^22515328 is an apocalyptic number.

It is an amenable number.

22515328 is an abundant number, since it is smaller than the sum of its proper divisors (26420192).

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

22515328 is a wasteful number, since it uses less digits than its factorization.

22515328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16016 (or 16004 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 22515328 is about 4745.0319282382. The cubic root of 22515328 is about 282.3749016688.

The spelling of 22515328 in words is "twenty-two million, five hundred fifteen thousand, three hundred twenty-eight".