501139688 has 32 divisors (see below), whose sum is σ = 1079516160. Its totient is φ = 213645120.

The previous prime is 501139669. The next prime is 501139693. The reversal of 501139688 is 886931105.

It is a super-2 number, since 2×501139688² = 502281973777474688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12731 + ... + 34122.

It is an arithmetic number, because the mean of its divisors is an integer number (33734880).

Almost surely, 2^501139688 is an apocalyptic number.

It is an amenable number.

501139688 is an abundant number, since it is smaller than the sum of its proper divisors (578376472).

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

501139688 is a wasteful number, since it uses less digits than its factorization.

501139688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47057 (or 47053 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 501139688 is about 22386.1494679188. The cubic root of 501139688 is about 794.3031156830.

The spelling of 501139688 in words is "five hundred one million, one hundred thirty-nine thousand, six hundred eighty-eight".