478257 has 8 divisors (see below), whose sum is σ = 686784. Its totient is φ = 294288.

The previous prime is 478253. The next prime is 478259. The reversal of 478257 is 752874.

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

It is not a de Polignac number, because 478257 - 2² = 478253 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478257.

It is not an unprimeable number, because it can be changed into a prime (478253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6093 + ... + 6170.

It is an arithmetic number, because the mean of its divisors is an integer number (85848).

2⁴⁷⁸²⁵⁷ is an apocalyptic number.

It is an amenable number.

478257 is a deficient number, since it is larger than the sum of its proper divisors (208527).

478257 is a wasteful number, since it uses less digits than its factorization.

478257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its digits is 15680, while the sum is 33.

The square root of 478257 is about 691.5612771114. The cubic root of 478257 is about 78.2024654565.

The spelling of 478257 in words is "four hundred seventy-eight thousand, two hundred fifty-seven".