22210400 has 36 divisors (see below), whose sum is σ = 54223092. Its totient is φ = 8883840.

The previous prime is 22210379. The next prime is 22210421. The reversal of 22210400 is 401222.

It is an interprime number because it is at equal distance from previous prime (22210379) and next prime (22210421).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13082 + ... + 14681.

It is an arithmetic number, because the mean of its divisors is an integer number (1506197).

Almost surely, 2^22210400 is an apocalyptic number.

22210400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22210400 is an abundant number, since it is smaller than the sum of its proper divisors (32012692).

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

22210400 is a wasteful number, since it uses less digits than its factorization.

22210400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27783 (or 27770 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22210400 is about 4712.7911050671. The cubic root of 22210400 is about 281.0943566815.

Adding to 22210400 its reverse (401222), we get a palindrome (22611622).

The spelling of 22210400 in words is "twenty-two million, two hundred ten thousand, four hundred".