22065312 has 24 divisors (see below), whose sum is σ = 57921696. Its totient is φ = 7355072.

The previous prime is 22065299. The next prime is 22065313. The reversal of 22065312 is 21356022.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (22065313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114828 + ... + 115019.

It is an arithmetic number, because the mean of its divisors is an integer number (2413404).

Almost surely, 2^22065312 is an apocalyptic number.

It is an amenable number.

22065312 is an abundant number, since it is smaller than the sum of its proper divisors (35856384).

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

22065312 is a wasteful number, since it uses less digits than its factorization.

22065312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229860 (or 229852 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22065312 is about 4697.3728827931. The cubic root of 22065312 is about 280.4809421440.

The spelling of 22065312 in words is "twenty-two million, sixty-five thousand, three hundred twelve".