501128 has 16 divisors (see below), whose sum is σ = 965580. Its totient is φ = 243648.

The previous prime is 501121. The next prime is 501131. The reversal of 501128 is 821105.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 13924 = 698^2 + 118^2 .

It is a super-2 number, since 2×501128² = 502258544768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501121) by changing a digit.

501128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551 + ... + 1142.

2⁵⁰¹¹²⁸ is an apocalyptic number.

It is an amenable number.

501128 is a deficient number, since it is larger than the sum of its proper divisors (464452).

501128 is a wasteful number, since it uses less digits than its factorization.

501128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 501128 is about 707.9039482868. The cubic root of 501128 is about 79.4296940501.

The spelling of 501128 in words is "five hundred one thousand, one hundred twenty-eight".