478027978 has 8 divisors (see below), whose sum is σ = 718676640. Its totient is φ = 238469100.

The previous prime is 478027943. The next prime is 478028009. The reversal of 478027978 is 879720874.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271348 + ... + 273103.

It is an arithmetic number, because the mean of its divisors is an integer number (89834580).

Almost surely, 2^478027978 is an apocalyptic number.

478027978 is a deficient number, since it is larger than the sum of its proper divisors (240648662).

478027978 is a wasteful number, since it uses less digits than its factorization.

478027978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544892.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The square root of 478027978 is about 21863.8509416800. The cubic root of 478027978 is about 781.8998057584.

The spelling of 478027978 in words is "four hundred seventy-eight million, twenty-seven thousand, nine hundred seventy-eight".