478649420 has 24 divisors (see below), whose sum is σ = 1006202400. Its totient is φ = 191261952.

The previous prime is 478649357. The next prime is 478649429. The reversal of 478649420 is 24946874.

It is not an unprimeable number, because it can be changed into a prime (478649429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8321 + ... + 32039.

It is an arithmetic number, because the mean of its divisors is an integer number (41925100).

Almost surely, 2^478649420 is an apocalyptic number.

It is an amenable number.

478649420 is an abundant number, since it is smaller than the sum of its proper divisors (527552980).

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

478649420 is a wasteful number, since it uses less digits than its factorization.

478649420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24737 (or 24735 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 478649420 is about 21878.0579576890. The cubic root of 478649420 is about 782.2384853563.

The spelling of 478649420 in words is "four hundred seventy-eight million, six hundred forty-nine thousand, four hundred twenty".