508208640 has 80 divisors (see below), whose sum is σ = 1624704048. Its totient is φ = 135520256.

The previous prime is 508208639. The next prime is 508208641. The reversal of 508208640 is 46802805.

It is an interprime number because it is at equal distance from previous prime (508208639) and next prime (508208641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508208641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25407 + ... + 40766.

Almost surely, 2^508208640 is an apocalyptic number.

It is an amenable number.

508208640 is an abundant number, since it is smaller than the sum of its proper divisors (1116495408).

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

508208640 is an equidigital number, since it uses as much as digits as its factorization.

508208640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66199 (or 66183 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 508208640 is about 22543.4833155837. The cubic root of 508208640 is about 798.0204390466.

The spelling of 508208640 in words is "five hundred eight million, two hundred eight thousand, six hundred forty".