478656784 has 10 divisors (see below), whose sum is σ = 927397550. Its totient is φ = 239328384.

The previous prime is 478656769. The next prime is 478656799. The reversal of 478656784 is 487656874.

It is an interprime number because it is at equal distance from previous prime (478656769) and next prime (478656799).

It can be written as a sum of positive squares in only one way, i.e., 286557184 + 192099600 = 16928^2 + 13860^2 .

It is a super-2 number, since 2×478656784² = 458224633738445312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14958009 + ... + 14958040.

It is an arithmetic number, because the mean of its divisors is an integer number (92739755).

Almost surely, 2^478656784 is an apocalyptic number.

It is an amenable number.

478656784 is a deficient number, since it is larger than the sum of its proper divisors (448740766).

478656784 is a wasteful number, since it uses less digits than its factorization.

478656784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29916057 (or 29916051 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The square root of 478656784 is about 21878.2262535152. The cubic root of 478656784 is about 782.2424969038.

The spelling of 478656784 in words is "four hundred seventy-eight million, six hundred fifty-six thousand, seven hundred eighty-four".