803812 has 12 divisors (see below), whose sum is σ = 1421056. Its totient is φ = 397800.

The previous prime is 803749. The next prime is 803813. The reversal of 803812 is 218308.

It is a super-2 number, since 2×803812² = 1292227462688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564 + ... + 1387.

2⁸⁰³⁸¹² is an apocalyptic number.

It is an amenable number.

803812 is a deficient number, since it is larger than the sum of its proper divisors (617244).

803812 is a wasteful number, since it uses less digits than its factorization.

803812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 803812 is about 896.5556312912. Note that the first 3 decimals coincide. The cubic root of 803812 is about 92.9789908993.

The spelling of 803812 in words is "eight hundred three thousand, eight hundred twelve".