500081780 has 48 divisors (see below), whose sum is σ = 1149482880. Its totient is φ = 181238400.

The previous prime is 500081759. The next prime is 500081807. The reversal of 500081780 is 87180005.

It is a happy number.

It is a congruent number.

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, 64766 + ... + 72074.

It is an arithmetic number, because the mean of its divisors is an integer number (23947560).

Almost surely, 2^500081780 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 500081780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574741440).

500081780 is an abundant number, since it is smaller than the sum of its proper divisors (649401100).

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

500081780 is a wasteful number, since it uses less digits than its factorization.

500081780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640 (or 7638 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 500081780 is about 22362.5083566223. The cubic root of 500081780 is about 793.7437961778.

The spelling of 500081780 in words is "five hundred million, eighty-one thousand, seven hundred eighty".