478239636 has 48 divisors (see below), whose sum is σ = 1304973824. Its totient is φ = 133461216.

The previous prime is 478239607. The next prime is 478239637. The reversal of 478239636 is 636932874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478239637) 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 15 ways as a sum of consecutive naturals, for example, 62590 + ... + 69813.

Almost surely, 2^478239636 is an apocalyptic number.

It is an amenable number.

478239636 is an abundant number, since it is smaller than the sum of its proper divisors (826734188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478239636 is a wasteful number, since it uses less digits than its factorization.

478239636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132460 (or 132458 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The square root of 478239636 is about 21868.6907701399. The cubic root of 478239636 is about 782.0151901690.

The spelling of 478239636 in words is "four hundred seventy-eight million, two hundred thirty-nine thousand, six hundred thirty-six".