478420 has 24 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 181152.

The previous prime is 478417. The next prime is 478421. The reversal of 478420 is 24874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478421) 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, 250 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (44100).

2⁴⁷⁸⁴²⁰ is an apocalyptic number.

It is an amenable number.

478420 is an abundant number, since it is smaller than the sum of its proper divisors (579980).

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

478420 is a wasteful number, since it uses less digits than its factorization.

478420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 478420 is about 691.6791163538. The cubic root of 478420 is about 78.2113487932.

It can be divided in two parts, 478 and 420, that added together give a palindrome (898).

The spelling of 478420 in words is "four hundred seventy-eight thousand, four hundred twenty".