478787508 has 18 divisors (see below), whose sum is σ = 1210268514. Its totient is φ = 159595824.

The previous prime is 478787503. The next prime is 478787513. The reversal of 478787508 is 805787874.

It is an interprime number because it is at equal distance from previous prime (478787503) and next prime (478787513).

It can be written as a sum of positive squares in only one way, i.e., 254147364 + 224640144 = 15942^2 + 14988^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478787501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6649791 + ... + 6649862.

Almost surely, 2^478787508 is an apocalyptic number.

It is an amenable number.

478787508 is an abundant number, since it is smaller than the sum of its proper divisors (731481006).

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

478787508 is a wasteful number, since it uses less digits than its factorization.

478787508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13299663 (or 13299658 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 54.

The square root of 478787508 is about 21881.2135860880. The cubic root of 478787508 is about 782.3137021069.

The spelling of 478787508 in words is "four hundred seventy-eight million, seven hundred eighty-seven thousand, five hundred eight".