22401400 has 48 divisors (see below), whose sum is σ = 59527440. Its totient is φ = 7680000.

The previous prime is 22401397. The next prime is 22401433. The reversal of 22401400 is 410422.

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 11 ways as a sum of consecutive naturals, for example, 6601 + ... + 9400.

It is an arithmetic number, because the mean of its divisors is an integer number (1240155).

Almost surely, 2^22401400 is an apocalyptic number.

22401400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22401400 is an abundant number, since it is smaller than the sum of its proper divisors (37126040).

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

22401400 is a wasteful number, since it uses less digits than its factorization.

22401400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16024 (or 16015 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22401400 is about 4733.0117261634. The cubic root of 22401400 is about 281.8978219092.

Adding to 22401400 its reverse (410422), we get a palindrome (22811822).

It can be divided in two parts, 22401 and 400, that added together give a square (22801 = 151²).

The spelling of 22401400 in words is "twenty-two million, four hundred one thousand, four hundred".