501389880 has 128 divisors (see below), whose sum is σ = 1576972800. Its totient is φ = 127288832.

The previous prime is 501389873. The next prime is 501389881. The reversal of 501389880 is 88983105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501389881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1073407 + ... + 1073873.

It is an arithmetic number, because the mean of its divisors is an integer number (12320100).

Almost surely, 2^501389880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501389880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788486400).

501389880 is an abundant number, since it is smaller than the sum of its proper divisors (1075582920).

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

501389880 is a wasteful number, since it uses less digits than its factorization.

501389880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 501389880 is about 22391.7368687648. The cubic root of 501389880 is about 794.4352779174.

The spelling of 501389880 in words is "five hundred one million, three hundred eighty-nine thousand, eight hundred eighty".