22421004 has 24 divisors (see below), whose sum is σ = 52407600. Its totient is φ = 7460544.

The previous prime is 22420999. The next prime is 22421023. The reversal of 22421004 is 40012422.

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 7 ways as a sum of consecutive naturals, for example, 7522 + ... + 10070.

It is an arithmetic number, because the mean of its divisors is an integer number (2183650).

Almost surely, 2^22421004 is an apocalyptic number.

It is an amenable number.

22421004 is an abundant number, since it is smaller than the sum of its proper divisors (29986596).

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

22421004 is a wasteful number, since it uses less digits than its factorization.

22421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289 (or 3287 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22421004 is about 4735.0822590532. The cubic root of 22421004 is about 281.9800297714.

Adding to 22421004 its reverse (40012422), we get a palindrome (62433426).

The spelling of 22421004 in words is "twenty-two million, four hundred twenty-one thousand, four".