478884778 has 32 divisors (see below), whose sum is σ = 771609600. Its totient is φ = 222236784.

The previous prime is 478884761. The next prime is 478884787. The reversal of 478884778 is 877488874.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608101 + ... + 608887.

It is an arithmetic number, because the mean of its divisors is an integer number (24112800).

Almost surely, 2^478884778 is an apocalyptic number.

478884778 is a deficient number, since it is larger than the sum of its proper divisors (292724822).

478884778 is a wasteful number, since it uses less digits than its factorization.

478884778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its digits is 22478848, while the sum is 61.

The square root of 478884778 is about 21883.4361561433. The cubic root of 478884778 is about 782.3666765475.

The spelling of 478884778 in words is "four hundred seventy-eight million, eight hundred eighty-four thousand, seven hundred seventy-eight".