2028556831 has 18 divisors (see below), whose sum is σ = 2490505560. Its totient is φ = 1647234792.

The previous prime is 2028556823. The next prime is 2028556837. The reversal of 2028556831 is 1386558202.

It is not a de Polignac number, because 2028556831 - 2³ = 2028556823 is a prime.

It is a super-2 number, since 2×2028556831² = 8230085633193525122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028556837) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 39651 + ... + 75028.

It is an arithmetic number, because the mean of its divisors is an integer number (138361420).

Almost surely, 2^2028556831 is an apocalyptic number.

2028556831 is a deficient number, since it is larger than the sum of its proper divisors (461948729).

2028556831 is a wasteful number, since it uses less digits than its factorization.

2028556831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114731 (or 114705 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2028556831 is about 45039.5030056949. The cubic root of 2028556831 is about 1265.8892924547.

The spelling of 2028556831 in words is "two billion, twenty-eight million, five hundred fifty-six thousand, eight hundred thirty-one".