478672218 has 36 divisors (see below), whose sum is σ = 1050663978. Its totient is φ = 157500720.

The previous prime is 478672189. The next prime is 478672241. The reversal of 478672218 is 812276874.

It can be written as a sum of positive squares in only one way, i.e., 283147929 + 195524289 = 16827^2 + 13983^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 110208 + ... + 114468.

Almost surely, 2^478672218 is an apocalyptic number.

478672218 is an abundant number, since it is smaller than the sum of its proper divisors (571991760).

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

478672218 is a wasteful number, since it uses less digits than its factorization.

478672218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4345 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 478672218 is about 21878.5789757927. The cubic root of 478672218 is about 782.2509044597.

The spelling of 478672218 in words is "four hundred seventy-eight million, six hundred seventy-two thousand, two hundred eighteen".