222342156 has 36 divisors (see below), whose sum is σ = 562502304. Its totient is φ = 74052000.

The previous prime is 222342151. The next prime is 222342157. The reversal of 222342156 is 651243222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (222342151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65706 + ... + 69006.

It is an arithmetic number, because the mean of its divisors is an integer number (15625064).

Almost surely, 2^222342156 is an apocalyptic number.

It is an amenable number.

222342156 is an abundant number, since it is smaller than the sum of its proper divisors (340160148).

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

222342156 is a wasteful number, since it uses less digits than its factorization.

222342156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182 (or 5177 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 222342156 is about 14911.1420085787. The cubic root of 222342156 is about 605.8158117487.

Adding to 222342156 its reverse (651243222), we get a palindrome (873585378).

It can be divided in two parts, 222 and 342156, that added together give a triangular number (342378 = T₈₂₇).

The spelling of 222342156 in words is "two hundred twenty-two million, three hundred forty-two thousand, one hundred fifty-six".