222864 has 20 divisors (see below), whose sum is σ = 575856. Its totient is φ = 74272.

The previous prime is 222863. The next prime is 222877. The reversal of 222864 is 468222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (222863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2274 + ... + 2369.

2²²²⁸⁶⁴ is an apocalyptic number.

222864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222864 is an abundant number, since it is smaller than the sum of its proper divisors (352992).

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

222864 is a wasteful number, since it uses less digits than its factorization.

222864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654 (or 4648 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 222864 is about 472.0847381562. The cubic root of 222864 is about 60.6289397659.

The spelling of 222864 in words is "two hundred twenty-two thousand, eight hundred sixty-four".