1805836 has 12 divisors (see below), whose sum is σ = 3326680. Its totient is φ = 855360.

The previous prime is 1805833. The next prime is 1805857. The reversal of 1805836 is 6385081.

It is a super-2 number, since 2×1805836² = 6522087317792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1805798 and 1805807.

It is not an unprimeable number, because it can be changed into a prime (1805833) 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, 11805 + ... + 11956.

2^1805836 is an apocalyptic number.

It is an amenable number.

1805836 is a deficient number, since it is larger than the sum of its proper divisors (1520844).

1805836 is a wasteful number, since it uses less digits than its factorization.

1805836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23784 (or 23782 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1805836 is about 1343.8139752213. The cubic root of 1805836 is about 121.7753637563.

The spelling of 1805836 in words is "one million, eight hundred five thousand, eight hundred thirty-six".