478322215 has 32 divisors (see below), whose sum is σ = 666132480. Its totient is φ = 322959744.

The previous prime is 478322209. The next prime is 478322231. The reversal of 478322215 is 512223874.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478322215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998346 + ... + 998824.

It is an arithmetic number, because the mean of its divisors is an integer number (20816640).

Almost surely, 2^478322215 is an apocalyptic number.

478322215 is a deficient number, since it is larger than the sum of its proper divisors (187810265).

478322215 is a wasteful number, since it uses less digits than its factorization.

478322215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 26880, while the sum is 34.

The square root of 478322215 is about 21870.5787532018. The cubic root of 478322215 is about 782.0601985085.

The spelling of 478322215 in words is "four hundred seventy-eight million, three hundred twenty-two thousand, two hundred fifteen".