802812857 has 24 divisors (see below), whose sum is σ = 1013140800. Its totient is φ = 622686240.

The previous prime is 802812851. The next prime is 802812937. The reversal of 802812857 is 758218208.

It is not a de Polignac number, because 802812857 - 2¹⁰ = 802811833 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (802812851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191894 + ... + 196032.

It is an arithmetic number, because the mean of its divisors is an integer number (42214200).

Almost surely, 2^802812857 is an apocalyptic number.

It is an amenable number.

802812857 is a deficient number, since it is larger than the sum of its proper divisors (210327943).

802812857 is a wasteful number, since it uses less digits than its factorization.

802812857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4386 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 802812857 is about 28333.9523716689. The cubic root of 802812857 is about 929.4045045037.

It can be divided in two parts, 80281 and 2857, that added together give a palindrome (83138).

The spelling of 802812857 in words is "eight hundred two million, eight hundred twelve thousand, eight hundred fifty-seven".