22294840 has 16 divisors (see below), whose sum is σ = 50163480. Its totient is φ = 8917920.

The previous prime is 22294817. The next prime is 22294849. The reversal of 22294840 is 4849222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22294849) 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, 278646 + ... + 278725.

Almost surely, 2^22294840 is an apocalyptic number.

22294840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22294840 is an abundant number, since it is smaller than the sum of its proper divisors (27868640).

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

22294840 is a wasteful number, since it uses less digits than its factorization.

22294840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557382 (or 557378 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 22294840 is about 4721.7412042593. The cubic root of 22294840 is about 281.4501298227.

The spelling of 22294840 in words is "twenty-two million, two hundred ninety-four thousand, eight hundred forty".