20799286 has 16 divisors (see below), whose sum is σ = 31999680. Its totient is φ = 10134720.

The previous prime is 20799269. The next prime is 20799287. The reversal of 20799286 is 68299702.

It is a happy number.

It is a super-2 number, since 2×20799286² = 865220596219592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20799287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38176 + ... + 38716.

It is an arithmetic number, because the mean of its divisors is an integer number (1999980).

Almost surely, 2^20799286 is an apocalyptic number.

20799286 is a deficient number, since it is larger than the sum of its proper divisors (11200394).

20799286 is a wasteful number, since it uses less digits than its factorization.

20799286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 20799286 is about 4560.6234222966. The cubic root of 20799286 is about 275.0106265866.

The spelling of 20799286 in words is "twenty million, seven hundred ninety-nine thousand, two hundred eighty-six".