478190466 has 56 divisors (see below), whose sum is σ = 1158208380. Its totient is φ = 147129696.

The previous prime is 478190431. The next prime is 478190497. The reversal of 478190466 is 664091874.

It can be written as a sum of positive squares in 2 ways, for example, as 381069441 + 97121025 = 19521^2 + 9855^2 .

It is a super-2 number, since 2×478190466² = 457332243546594312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6340 + ... + 31568.

Almost surely, 2^478190466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478190466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579104190).

478190466 is an abundant number, since it is smaller than the sum of its proper divisors (680017914).

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

478190466 is a wasteful number, since it uses less digits than its factorization.

478190466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25262 (or 25247 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 478190466 is about 21867.5665312810. The cubic root of 478190466 is about 781.9883884000.

The spelling of 478190466 in words is "four hundred seventy-eight million, one hundred ninety thousand, four hundred sixty-six".