801812 has 12 divisors (see below), whose sum is σ = 1530816. Its totient is φ = 364440.

The previous prime is 801811. The next prime is 801817. The reversal of 801812 is 218108.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801811) 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, 9068 + ... + 9155.

It is an arithmetic number, because the mean of its divisors is an integer number (127568).

2⁸⁰¹⁸¹² is an apocalyptic number.

It is an amenable number.

801812 is a deficient number, since it is larger than the sum of its proper divisors (729004).

801812 is a wasteful number, since it uses less digits than its factorization.

801812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18238 (or 18236 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 801812 is about 895.4395568658. The cubic root of 801812 is about 92.9018118137.

The spelling of 801812 in words is "eight hundred one thousand, eight hundred twelve".