22021368 has 16 divisors (see below), whose sum is σ = 55053480. Its totient is φ = 7340448.

The previous prime is 22021367. The next prime is 22021393. The reversal of 22021368 is 86312022.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 917557 = 22021368 / (2 + 2 + 0 + 2 + 1 + 3 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021367) 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, 458755 + ... + 458802.

Almost surely, 2^22021368 is an apocalyptic number.

It is an amenable number.

22021368 is an abundant number, since it is smaller than the sum of its proper divisors (33032112).

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

22021368 is a wasteful number, since it uses less digits than its factorization.

22021368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917566 (or 917562 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22021368 is about 4692.6930434453. The cubic root of 22021368 is about 280.2946218568.

It can be divided in two parts, 2202 and 1368, that added together give a triangular number (3570 = T₈₄).

The spelling of 22021368 in words is "twenty-two million, twenty-one thousand, three hundred sixty-eight".