500006128 has 20 divisors (see below), whose sum is σ = 1019749960. Its totient is φ = 236844864.

The previous prime is 500006119. The next prime is 500006137. The reversal of 500006128 is 821600005.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (500006119) and next prime (500006137).

It is a super-2 number, since 2×500006128² = 500012256075104768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 500006099 and 500006108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822075 + ... + 822682.

It is an arithmetic number, because the mean of its divisors is an integer number (50987498).

Almost surely, 2^500006128 is an apocalyptic number.

It is an amenable number.

500006128 is an abundant number, since it is smaller than the sum of its proper divisors (519743832).

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

500006128 is a wasteful number, since it uses less digits than its factorization.

500006128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644784 (or 1644778 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 500006128 is about 22360.8168008237. The cubic root of 500006128 is about 793.7037685021.

The spelling of 500006128 in words is "five hundred million, six thousand, one hundred twenty-eight".