402274318 has 4 divisors (see below), whose sum is σ = 603411480. Its totient is φ = 201137158.

The previous prime is 402274307. The next prime is 402274319. The reversal of 402274318 is 813472204.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 402274318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402274319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100568578 + ... + 100568581.

It is an arithmetic number, because the mean of its divisors is an integer number (150852870).

Almost surely, 2^402274318 is an apocalyptic number.

402274318 is a deficient number, since it is larger than the sum of its proper divisors (201137162).

402274318 is a wasteful number, since it uses less digits than its factorization.

402274318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201137161.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 402274318 is about 20056.7773582896. Note that the first 3 decimals coincide. The cubic root of 402274318 is about 738.2001046184.

The spelling of 402274318 in words is "four hundred two million, two hundred seventy-four thousand, three hundred eighteen".