478220178 has 8 divisors (see below), whose sum is σ = 956440368. Its totient is φ = 159406724.

The previous prime is 478220137. The next prime is 478220201. The reversal of 478220178 is 871022874.

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

478220178 is an admirable number.

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, 39851676 + ... + 39851687.

It is an arithmetic number, because the mean of its divisors is an integer number (119555046).

Almost surely, 2^478220178 is an apocalyptic number.

478220178 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478220178 is a wasteful number, since it uses less digits than its factorization.

478220178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79703368.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 478220178 is about 21868.2458830149. The cubic root of 478220178 is about 782.0045841486.

The spelling of 478220178 in words is "four hundred seventy-eight million, two hundred twenty thousand, one hundred seventy-eight".