478228185 has 32 divisors (see below), whose sum is σ = 852420480. Its totient is φ = 254384064.

The previous prime is 478228151. The next prime is 478228187. The reversal of 478228185 is 581822874.

It is a happy number.

478228185 is a `hidden beast` number, since 478 + 22 + 81 + 85 = 666.

It is not a de Polignac number, because 478228185 - 2⁷ = 478228057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 478228185.

It is not an unprimeable number, because it can be changed into a prime (478228187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49134 + ... + 58056.

It is an arithmetic number, because the mean of its divisors is an integer number (26638140).

Almost surely, 2^478228185 is an apocalyptic number.

478228185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

478228185 is a deficient number, since it is larger than the sum of its proper divisors (374192295).

478228185 is a wasteful number, since it uses less digits than its factorization.

478228185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9334 (or 9328 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 478228185 is about 21868.4289559172. The cubic root of 478228185 is about 782.0089485788.

The spelling of 478228185 in words is "four hundred seventy-eight million, two hundred twenty-eight thousand, one hundred eighty-five".