3128156940 has 48 divisors (see below), whose sum is σ = 8775738720. Its totient is φ = 832565760.

The previous prime is 3128156909. The next prime is 3128156953. The reversal of 3128156940 is 496518213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18775 + ... + 81294.

It is an arithmetic number, because the mean of its divisors is an integer number (182827890).

Almost surely, 2^3128156940 is an apocalyptic number.

3128156940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3128156940 is an abundant number, since it is smaller than the sum of its proper divisors (5647581780).

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

3128156940 is a wasteful number, since it uses less digits than its factorization.

3128156940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100602 (or 100600 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 3128156940 is about 55929.9288395757. The cubic root of 3128156940 is about 1462.5010206728.

The spelling of 3128156940 in words is "three billion, one hundred twenty-eight million, one hundred fifty-six thousand, nine hundred forty".