478166556 has 48 divisors (see below), whose sum is σ = 1296028160. Its totient is φ = 134377920.

The previous prime is 478166551. The next prime is 478166567. The reversal of 478166556 is 655661874.

It is a super-2 number, since 2×478166556² = 457286510553802272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478166551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41536 + ... + 51783.

Almost surely, 2^478166556 is an apocalyptic number.

It is an amenable number.

478166556 is an abundant number, since it is smaller than the sum of its proper divisors (817861604).

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

478166556 is a wasteful number, since it uses less digits than its factorization.

478166556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93394 (or 93392 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 478166556 is about 21867.0198243839. The cubic root of 478166556 is about 781.9753547831.

The spelling of 478166556 in words is "four hundred seventy-eight million, one hundred sixty-six thousand, five hundred fifty-six".