222450 has 24 divisors (see below), whose sum is σ = 552048. Its totient is φ = 59280.

The previous prime is 222437. The next prime is 222461. The reversal of 222450 is 54222.

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

It is a Curzon number.

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, 592 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (23002).

2²²²⁴⁵⁰ is an apocalyptic number.

222450 is an abundant number, since it is smaller than the sum of its proper divisors (329598).

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

222450 is a wasteful number, since it uses less digits than its factorization.

222450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 222450 is about 471.6460537310. The cubic root of 222450 is about 60.5913743455.

Adding to 222450 its reverse (54222), we get a palindrome (276672).

The spelling of 222450 in words is "two hundred twenty-two thousand, four hundred fifty".