318228402 has 8 divisors (see below), whose sum is σ = 636456816. Its totient is φ = 106076132.

The previous prime is 318228401. The next prime is 318228413. The reversal of 318228402 is 204822813.

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

318228402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 318228402.

It is not an unprimeable number, because it can be changed into a prime (318228401) 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, 26519028 + ... + 26519039.

It is an arithmetic number, because the mean of its divisors is an integer number (79557102).

Almost surely, 2^318228402 is an apocalyptic number.

318228402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

318228402 is a wasteful number, since it uses less digits than its factorization.

318228402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53038072.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 318228402 is about 17838.9574246927. The cubic root of 318228402 is about 682.7257962932.

The spelling of 318228402 in words is "three hundred eighteen million, two hundred twenty-eight thousand, four hundred two".