22223400 has 48 divisors (see below), whose sum is σ = 68894400. Its totient is φ = 5926080.

The previous prime is 22223393. The next prime is 22223413. The reversal of 22223400 is 432222.

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 22223400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17920 + ... + 19119.

It is an arithmetic number, because the mean of its divisors is an integer number (1435300).

Almost surely, 2^22223400 is an apocalyptic number.

22223400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22223400 is an abundant number, since it is smaller than the sum of its proper divisors (46671000).

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

22223400 is a wasteful number, since it uses less digits than its factorization.

22223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37058 (or 37049 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22223400 is about 4714.1701284532. The cubic root of 22223400 is about 281.1491885608.

Adding to 22223400 its reverse (432222), we get a palindrome (22655622).

The spelling of 22223400 in words is "twenty-two million, two hundred twenty-three thousand, four hundred".