22394420 has 24 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 8929952.

The previous prime is 22394413. The next prime is 22394441. The reversal of 22394420 is 2449322.

It is a self number, because there is not a number n which added to its sum of digits gives 22394420.

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, 5621 + ... + 8739.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^22394420 is an apocalyptic number.

22394420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22394420 is an abundant number, since it is smaller than the sum of its proper divisors (24779980).

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

22394420 is a wasteful number, since it uses less digits than its factorization.

22394420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487 (or 3485 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22394420 is about 4732.2742946706. The cubic root of 22394420 is about 281.8685402393.

The spelling of 22394420 in words is "twenty-two million, three hundred ninety-four thousand, four hundred twenty".