508860138 has 8 divisors (see below), whose sum is σ = 1017720288. Its totient is φ = 169620044.

The previous prime is 508860113. The next prime is 508860139. The reversal of 508860138 is 831068805.

It is a happy number.

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

508860138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 508860096 and 508860105.

It is not an unprimeable number, because it can be changed into a prime (508860139) 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, 42405006 + ... + 42405017.

It is an arithmetic number, because the mean of its divisors is an integer number (127215036).

Almost surely, 2^508860138 is an apocalyptic number.

508860138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

508860138 is a wasteful number, since it uses less digits than its factorization.

508860138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84810028.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 508860138 is about 22557.9284953207. The cubic root of 508860138 is about 798.3613008315.

The spelling of 508860138 in words is "five hundred eight million, eight hundred sixty thousand, one hundred thirty-eight".