478858215 has 16 divisors (see below), whose sum is σ = 835825536. Its totient is φ = 232173600.

The previous prime is 478858157. The next prime is 478858217. The reversal of 478858215 is 512858874.

It is not a de Polignac number, because 478858215 - 2¹⁰ = 478857191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478858217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450921 + ... + 1451250.

It is an arithmetic number, because the mean of its divisors is an integer number (52239096).

Almost surely, 2^478858215 is an apocalyptic number.

478858215 is a deficient number, since it is larger than the sum of its proper divisors (356967321).

478858215 is a wasteful number, since it uses less digits than its factorization.

478858215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902190.

The product of its digits is 716800, while the sum is 48.

The square root of 478858215 is about 21882.8292275016. The cubic root of 478858215 is about 782.3522107224.

The spelling of 478858215 in words is "four hundred seventy-eight million, eight hundred fifty-eight thousand, two hundred fifteen".