22165312 has 28 divisors (see below), whose sum is σ = 47369476. Its totient is φ = 10229760.

The previous prime is 22165303. The next prime is 22165321. The reversal of 22165312 is 21356122.

It is an interprime number because it is at equal distance from previous prime (22165303) and next prime (22165321).

It can be written as a sum of positive squares in 2 ways, for example, as 2238016 + 19927296 = 1496^2 + 4464^2 .

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, 12489 + ... + 14152.

It is an arithmetic number, because the mean of its divisors is an integer number (1691767).

Almost surely, 2^22165312 is an apocalyptic number.

It is an amenable number.

22165312 is an abundant number, since it is smaller than the sum of its proper divisors (25204164).

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

22165312 is a wasteful number, since it uses less digits than its factorization.

22165312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26666 (or 26656 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 22165312 is about 4708.0050977033. The cubic root of 22165312 is about 280.9040168967.

The spelling of 22165312 in words is "twenty-two million, one hundred sixty-five thousand, three hundred twelve".