501987834 has 32 divisors (see below), whose sum is σ = 1164032640. Its totient is φ = 160053696.

The previous prime is 501987823. The next prime is 501987859. The reversal of 501987834 is 438789105.

It is a self number, because there is not a number n which added to its sum of digits gives 501987834.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200847 + ... + 203330.

It is an arithmetic number, because the mean of its divisors is an integer number (36376020).

Almost surely, 2^501987834 is an apocalyptic number.

501987834 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

501987834 is an abundant number, since it is smaller than the sum of its proper divisors (662044806).

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

501987834 is a wasteful number, since it uses less digits than its factorization.

501987834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404211 (or 404205 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 501987834 is about 22405.0850031862. The cubic root of 501987834 is about 794.7509650734.

The spelling of 501987834 in words is "five hundred one million, nine hundred eighty-seven thousand, eight hundred thirty-four".