402322222 has 8 divisors (see below), whose sum is σ = 608090472. Its totient is φ = 199625400.

The previous prime is 402322171. The next prime is 402322229. The reversal of 402322222 is 222223204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 402322222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402322229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767529 + ... + 768052.

It is an arithmetic number, because the mean of its divisors is an integer number (76011309).

Almost surely, 2^402322222 is an apocalyptic number.

402322222 is a deficient number, since it is larger than the sum of its proper divisors (205768250).

402322222 is a wasteful number, since it uses less digits than its factorization.

402322222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535714.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402322222 is about 20057.9715325354. The cubic root of 402322222 is about 738.2294057964.

Adding to 402322222 its reverse (222223204), we get a palindrome (624545426).

It can be divided in two parts, 402 and 322222, that added together give a square (322624 = 568²).

The spelling of 402322222 in words is "four hundred two million, three hundred twenty-two thousand, two hundred twenty-two".