22400504 has 16 divisors (see below), whose sum is σ = 48001200. Its totient is φ = 9600192.

The previous prime is 22400491. The next prime is 22400513. The reversal of 22400504 is 40500422.

22400504 is a modest number, since divided by 504 gives 224 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199949 + ... + 200060.

It is an arithmetic number, because the mean of its divisors is an integer number (3000075).

Almost surely, 2^22400504 is an apocalyptic number.

It is an amenable number.

22400504 is an abundant number, since it is smaller than the sum of its proper divisors (25600696).

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

22400504 is a wasteful number, since it uses less digits than its factorization.

22400504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400022 (or 400018 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22400504 is about 4732.9170708982. The cubic root of 22400504 is about 281.8940634564.

Adding to 22400504 its reverse (40500422), we get a palindrome (62900926).

It can be divided in two parts, 22400 and 504, that multiplied together give a square (11289600 = 3360²).

The spelling of 22400504 in words is "twenty-two million, four hundred thousand, five hundred four".