478254615 has 8 divisors (see below), whose sum is σ = 765207408. Its totient is φ = 255069120.

The previous prime is 478254611. The next prime is 478254629. The reversal of 478254615 is 516452874.

It is a happy number.

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

It is not a de Polignac number, because 478254615 - 2² = 478254611 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478254611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15941806 + ... + 15941835.

It is an arithmetic number, because the mean of its divisors is an integer number (95650926).

Almost surely, 2^478254615 is an apocalyptic number.

478254615 is a deficient number, since it is larger than the sum of its proper divisors (286952793).

478254615 is a wasteful number, since it uses less digits than its factorization.

478254615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31883649.

The product of its digits is 268800, while the sum is 42.

The square root of 478254615 is about 21869.0332433786. The cubic root of 478254615 is about 782.0233546137.

The spelling of 478254615 in words is "four hundred seventy-eight million, two hundred fifty-four thousand, six hundred fifteen".