812036 has 12 divisors (see below), whose sum is σ = 1437660. Its totient is φ = 401280.

The previous prime is 812033. The next prime is 812047. The reversal of 812036 is 630218.

812036 = 48² + 49² + ... + 136².

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 498436 = 560^2 + 706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 811999 and 812017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812033) 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, 785 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (119805).

2⁸¹²⁰³⁶ is an apocalyptic number.

It is an amenable number.

812036 is a deficient number, since it is larger than the sum of its proper divisors (625624).

812036 is a wasteful number, since it uses less digits than its factorization.

812036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 812036 is about 901.1304012184. The cubic root of 812036 is about 93.2950126131.

The spelling of 812036 in words is "eight hundred twelve thousand, thirty-six".