22421268 has 18 divisors (see below), whose sum is σ = 56676074. Its totient is φ = 7473744.

The previous prime is 22421233. The next prime is 22421281. The reversal of 22421268 is 86212422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12194064 + 10227204 = 3492^2 + 3198^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311371 + ... + 311442.

Almost surely, 2^22421268 is an apocalyptic number.

It is an amenable number.

22421268 is an abundant number, since it is smaller than the sum of its proper divisors (34254806).

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

22421268 is a wasteful number, since it uses less digits than its factorization.

22421268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622823 (or 622818 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 22421268 is about 4735.1101359947. The cubic root of 22421268 is about 281.9811365079.

The spelling of 22421268 in words is "twenty-two million, four hundred twenty-one thousand, two hundred sixty-eight".