22865312 has 48 divisors (see below), whose sum is σ = 48045312. Its totient is φ = 10686720.

The previous prime is 22865309. The next prime is 22865317. The reversal of 22865312 is 21356822.

It is not an unprimeable number, because it can be changed into a prime (22865317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34262 + ... + 34922.

It is an arithmetic number, because the mean of its divisors is an integer number (1000944).

Almost surely, 2^22865312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22865312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24022656).

22865312 is an abundant number, since it is smaller than the sum of its proper divisors (25180000).

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

22865312 is a wasteful number, since it uses less digits than its factorization.

22865312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 733 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 22865312 is about 4781.7687104250. The cubic root of 22865312 is about 283.8304880118.

The spelling of 22865312 in words is "twenty-two million, eight hundred sixty-five thousand, three hundred twelve".