22449400 has 24 divisors (see below), whose sum is σ = 52195320. Its totient is φ = 8979680.

The previous prime is 22449379. The next prime is 22449421. The reversal of 22449400 is 494422.

It is an interprime number because it is at equal distance from previous prime (22449379) and next prime (22449421).

It is a Harshad number since it is a multiple of its sum of digits (25).

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 5 ways as a sum of consecutive naturals, for example, 55924 + ... + 56323.

It is an arithmetic number, because the mean of its divisors is an integer number (2174805).

Almost surely, 2^22449400 is an apocalyptic number.

22449400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22449400 is an abundant number, since it is smaller than the sum of its proper divisors (29745920).

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

22449400 is a wasteful number, since it uses less digits than its factorization.

22449400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112263 (or 112254 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 22449400 is about 4738.0797798264. The cubic root of 22449400 is about 282.0990212758.

The spelling of 22449400 in words is "twenty-two million, four hundred forty-nine thousand, four hundred".