478693238 has 4 divisors (see below), whose sum is σ = 718039860. Its totient is φ = 239346618.

The previous prime is 478693223. The next prime is 478693253. The reversal of 478693238 is 832396874.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (478693223) and next prime (478693253).

It is a super-2 number, since 2×478693238² = 458294432213849288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119673308 + ... + 119673311.

It is an arithmetic number, because the mean of its divisors is an integer number (179509965).

Almost surely, 2^478693238 is an apocalyptic number.

478693238 is a deficient number, since it is larger than the sum of its proper divisors (239346622).

478693238 is a wasteful number, since it uses less digits than its factorization.

478693238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239346621.

The product of its digits is 1741824, while the sum is 50.

The square root of 478693238 is about 21879.0593490671. The cubic root of 478693238 is about 782.2623546565.

The spelling of 478693238 in words is "four hundred seventy-eight million, six hundred ninety-three thousand, two hundred thirty-eight".