22224390 has 32 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 5912544.

The previous prime is 22224361. The next prime is 22224401. The reversal of 22224390 is 9342222.

It is a self number, because there is not a number n which added to its sum of digits gives 22224390.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21301 + ... + 22319.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^22224390 is an apocalyptic number.

22224390 is an abundant number, since it is smaller than the sum of its proper divisors (31239930).

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

22224390 is a wasteful number, since it uses less digits than its factorization.

22224390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22224390 is about 4714.2751298582. The cubic root of 22224390 is about 281.1533633429.

The spelling of 22224390 in words is "twenty-two million, two hundred twenty-four thousand, three hundred ninety".