478555890 has 16 divisors (see below), whose sum is σ = 1148534208. Its totient is φ = 127614896.

The previous prime is 478555879. The next prime is 478555943. The reversal of 478555890 is 98555874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7975902 + ... + 7975961.

It is an arithmetic number, because the mean of its divisors is an integer number (71783388).

Almost surely, 2^478555890 is an apocalyptic number.

478555890 is an abundant number, since it is smaller than the sum of its proper divisors (669978318).

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

478555890 is a wasteful number, since it uses less digits than its factorization.

478555890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15951873.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The square root of 478555890 is about 21875.9203234972. The cubic root of 478555890 is about 782.1875312004.

The spelling of 478555890 in words is "four hundred seventy-eight million, five hundred fifty-five thousand, eight hundred ninety".