22421404 has 24 divisors (see below), whose sum is σ = 40827248. Its totient is φ = 10765440.

The previous prime is 22421393. The next prime is 22421411. The reversal of 22421404 is 40412422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9424 + ... + 11560.

Almost surely, 2^22421404 is an apocalyptic number.

It is an amenable number.

22421404 is a deficient number, since it is larger than the sum of its proper divisors (18405844).

22421404 is a wasteful number, since it uses less digits than its factorization.

22421404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 22421404 is about 4735.1244967794. The cubic root of 22421404 is about 281.9817066416.

Adding to 22421404 its reverse (40412422), we get a palindrome (62833826).

The spelling of 22421404 in words is "twenty-two million, four hundred twenty-one thousand, four hundred four".