222402402 has 32 divisors (see below), whose sum is σ = 504748800. Its totient is φ = 72555984.

The previous prime is 222402379. The next prime is 222402437. The reversal of 222402402 is 204204222.

222402402 is a `hidden beast` number, since 22 + 240 + 2 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41277 + ... + 46352.

It is an arithmetic number, because the mean of its divisors is an integer number (15773400).

Almost surely, 2^222402402 is an apocalyptic number.

222402402 is an abundant number, since it is smaller than the sum of its proper divisors (282346398).

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

222402402 is a wasteful number, since it uses less digits than its factorization.

222402402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87687 (or 87681 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 222402402 is about 14913.1620389507. The cubic root of 222402402 is about 605.8705242453.

Adding to 222402402 its reverse (204204222), we get a palindrome (426606624).

It can be divided in two parts, 22240 and 2402, that added together give a palindrome (24642).

The spelling of 222402402 in words is "two hundred twenty-two million, four hundred two thousand, four hundred two".