478215 has 12 divisors (see below), whose sum is σ = 828984. Its totient is φ = 255024.

The previous prime is 478213. The next prime is 478241. The reversal of 478215 is 512874.

It is not a de Polignac number, because 478215 - 2¹ = 478213 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

478215 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5269 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (69082).

2⁴⁷⁸²¹⁵ is an apocalyptic number.

478215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

478215 is a deficient number, since it is larger than the sum of its proper divisors (350769).

478215 is a wasteful number, since it uses less digits than its factorization.

478215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638 (or 10635 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 478215 is about 691.5309103721. The cubic root of 478215 is about 78.2001761715.

The spelling of 478215 in words is "four hundred seventy-eight thousand, two hundred fifteen".