501380838 has 72 divisors (see below), whose sum is σ = 1284538320. Its totient is φ = 140888160.

The previous prime is 501380801. The next prime is 501380851. The reversal of 501380838 is 838083105.

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 35 ways as a sum of consecutive naturals, for example, 49143 + ... + 58461.

It is an arithmetic number, because the mean of its divisors is an integer number (17840810).

Almost surely, 2^501380838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501380838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642269160).

501380838 is an abundant number, since it is smaller than the sum of its proper divisors (783157482).

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

501380838 is a wasteful number, since it uses less digits than its factorization.

501380838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402 (or 9392 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 501380838 is about 22391.5349630167. The cubic root of 501380838 is about 794.4305023078.

The spelling of 501380838 in words is "five hundred one million, three hundred eighty thousand, eight hundred thirty-eight".