22421400 has 48 divisors (see below), whose sum is σ = 69508200. Its totient is φ = 5978880.

The previous prime is 22421393. The next prime is 22421411. The reversal of 22421400 is 412422.

It is a super-3 number, since 3×22421400³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22421400.

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, 18085 + ... + 19284.

Almost surely, 2^22421400 is an apocalyptic number.

22421400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421400 is an abundant number, since it is smaller than the sum of its proper divisors (47086800).

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

22421400 is a wasteful number, since it uses less digits than its factorization.

22421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37388 (or 37379 counting only the distinct ones).

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

The square root of 22421400 is about 4735.1240744040. The cubic root of 22421400 is about 281.9816898730.

Adding to 22421400 its reverse (412422), we get a palindrome (22833822).

The spelling of 22421400 in words is "twenty-two million, four hundred twenty-one thousand, four hundred".