222162156 has 96 divisors (see below), whose sum is σ = 603288000. Its totient is φ = 70608384.

The previous prime is 222162139. The next prime is 222162197. The reversal of 222162156 is 651261222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278350 + ... + 279146.

It is an arithmetic number, because the mean of its divisors is an integer number (6284250).

Almost surely, 2^222162156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222162156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301644000).

222162156 is an abundant number, since it is smaller than the sum of its proper divisors (381125844).

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

222162156 is a wasteful number, since it uses less digits than its factorization.

222162156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 920 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 222162156 is about 14905.1050314984. The cubic root of 222162156 is about 605.6522855749.

222162156 divided by its sum of digits (27) gives a palindrome (8228228).

The spelling of 222162156 in words is "two hundred twenty-two million, one hundred sixty-two thousand, one hundred fifty-six".