22778200 has 24 divisors (see below), whose sum is σ = 52959780. Its totient is φ = 9111200.

The previous prime is 22778179. The next prime is 22778209. The reversal of 22778200 is 287722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22778209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56746 + ... + 57145.

Almost surely, 2^22778200 is an apocalyptic number.

22778200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22778200 is an abundant number, since it is smaller than the sum of its proper divisors (30181580).

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

22778200 is a wasteful number, since it uses less digits than its factorization.

22778200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113907 (or 113898 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 22778200 is about 4772.6512548059. The cubic root of 22778200 is about 283.4695846026.

The spelling of 22778200 in words is "twenty-two million, seven hundred seventy-eight thousand, two hundred".