478834257 has 64 divisors (see below), whose sum is σ = 783820800. Its totient is φ = 256250880.

The previous prime is 478834253. The next prime is 478834337. The reversal of 478834257 is 752438874.

It is not a de Polignac number, because 478834257 - 2² = 478834253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478834253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1779919 + ... + 1780187.

It is an arithmetic number, because the mean of its divisors is an integer number (12247200).

Almost surely, 2^478834257 is an apocalyptic number.

It is an amenable number.

478834257 is a deficient number, since it is larger than the sum of its proper divisors (304986543).

478834257 is a wasteful number, since it uses less digits than its factorization.

478834257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its digits is 1505280, while the sum is 48.

The square root of 478834257 is about 21882.2818051500. The cubic root of 478834257 is about 782.3391630837.

The spelling of 478834257 in words is "four hundred seventy-eight million, eight hundred thirty-four thousand, two hundred fifty-seven".