222810 has 32 divisors (see below), whose sum is σ = 611712. Its totient is φ = 50880.

The previous prime is 222799. The next prime is 222823. The reversal of 222810 is 18222.

It is a super-2 number, since 2×222810² = 99288592200, which contains 22 as substring.

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 222810.

It is an unprimeable number.

222810 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 740.

It is an arithmetic number, because the mean of its divisors is an integer number (19116).

2²²²⁸¹⁰ is an apocalyptic number.

222810 is an abundant number, since it is smaller than the sum of its proper divisors (388902).

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

222810 is a wasteful number, since it uses less digits than its factorization.

222810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 222810 is about 472.0275415693. The cubic root of 222810 is about 60.6240425682.

The spelling of 222810 in words is "two hundred twenty-two thousand, eight hundred ten".