22465818 has 12 divisors (see below), whose sum is σ = 48675978. Its totient is φ = 7488600.

The previous prime is 22465811. The next prime is 22465819. The reversal of 22465818 is 81856422.

It can be written as a sum of positive squares in only one way, i.e., 21650409 + 815409 = 4653^2 + 903^2 .

It is not an unprimeable number, because it can be changed into a prime (22465811) 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 5 ways as a sum of consecutive naturals, for example, 624033 + ... + 624068.

Almost surely, 2^22465818 is an apocalyptic number.

22465818 is an abundant number, since it is smaller than the sum of its proper divisors (26210160).

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

22465818 is a wasteful number, since it uses less digits than its factorization.

22465818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248109 (or 1248106 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 22465818 is about 4739.8120215890. The cubic root of 22465818 is about 282.1677740136.

It can be divided in two parts, 224658 and 18, that added together give a square (224676 = 474²).

The spelling of 22465818 in words is "twenty-two million, four hundred sixty-five thousand, eight hundred eighteen".