478494015 has 8 divisors (see below), whose sum is σ = 765590448. Its totient is φ = 255196800.

The previous prime is 478493947. The next prime is 478494031. The reversal of 478494015 is 510494874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478494015 - 2¹⁶ = 478428479 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15949786 + ... + 15949815.

It is an arithmetic number, because the mean of its divisors is an integer number (95698806).

Almost surely, 2^478494015 is an apocalyptic number.

478494015 is a deficient number, since it is larger than the sum of its proper divisors (287096433).

478494015 is a wasteful number, since it uses less digits than its factorization.

478494015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31899609.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 478494015 is about 21874.5060515661. The cubic root of 478494015 is about 782.1538187052.

The spelling of 478494015 in words is "four hundred seventy-eight million, four hundred ninety-four thousand, fifteen".