2856811023 has 12 divisors (see below), whose sum is σ = 4501641768. Its totient is φ = 1731400560.

The previous prime is 2856811003. The next prime is 2856811037. The reversal of 2856811023 is 3201186582.

It is a happy number.

It is not a de Polignac number, because 2856811023 - 2⁵ = 2856810991 is a prime.

It is a super-2 number, since 2×2856811023² = 16322738442268613058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856811003) 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 11 ways as a sum of consecutive naturals, for example, 14428240 + ... + 14428437.

It is an arithmetic number, because the mean of its divisors is an integer number (375136814).

Almost surely, 2^2856811023 is an apocalyptic number.

2856811023 is a deficient number, since it is larger than the sum of its proper divisors (1644830745).

2856811023 is a wasteful number, since it uses less digits than its factorization.

2856811023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28856694 (or 28856691 counting only the distinct ones).

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

The square root of 2856811023 is about 53449.1442681733. The cubic root of 2856811023 is about 1418.9284753434.

The spelling of 2856811023 in words is "two billion, eight hundred fifty-six million, eight hundred eleven thousand, twenty-three".