22420284 has 24 divisors (see below), whose sum is σ = 52464720. Its totient is φ = 7451904.

The previous prime is 22420267. The next prime is 22420291. The reversal of 22420284 is 48202422.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1972 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (2186030).

Almost surely, 2^22420284 is an apocalyptic number.

It is an amenable number.

22420284 is an abundant number, since it is smaller than the sum of its proper divisors (30044436).

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

22420284 is a wasteful number, since it uses less digits than its factorization.

22420284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389 (or 5387 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 22420284 is about 4735.0062301965. The cubic root of 22420284 is about 281.9770113547.

The spelling of 22420284 in words is "twenty-two million, four hundred twenty thousand, two hundred eighty-four".