402222278 has 8 divisors (see below), whose sum is σ = 638823672. Its totient is φ = 189281056.

The previous prime is 402222277. The next prime is 402222281. The reversal of 402222278 is 872222204.

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 402222278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402222277) 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, 5915000 + ... + 5915067.

It is an arithmetic number, because the mean of its divisors is an integer number (79852959).

Almost surely, 2^402222278 is an apocalyptic number.

402222278 is a deficient number, since it is larger than the sum of its proper divisors (236601394).

402222278 is a wasteful number, since it uses less digits than its factorization.

402222278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830086.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 402222278 is about 20055.4799992421. The cubic root of 402222278 is about 738.1682709596.

The spelling of 402222278 in words is "four hundred two million, two hundred twenty-two thousand, two hundred seventy-eight".