478257730 has 8 divisors (see below), whose sum is σ = 860863932. Its totient is φ = 191303088.

The previous prime is 478257713. The next prime is 478257733. The reversal of 478257730 is 37752874.

It can be written as a sum of positive squares in 2 ways, for example, as 429774361 + 48483369 = 20731^2 + 6963^2 .

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

It is not an unprimeable number, because it can be changed into a prime (478257733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23912877 + ... + 23912896.

Almost surely, 2^478257730 is an apocalyptic number.

478257730 is a deficient number, since it is larger than the sum of its proper divisors (382606202).

478257730 is a wasteful number, since it uses less digits than its factorization.

478257730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47825780.

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 478257730 is about 21869.1044626889. The cubic root of 478257730 is about 782.0250524523.

It can be divided in two parts, 47825 and 7730, that added together give a palindrome (55555).

The spelling of 478257730 in words is "four hundred seventy-eight million, two hundred fifty-seven thousand, seven hundred thirty".