20286366 has 16 divisors (see below), whose sum is σ = 40726800. Its totient is φ = 6736448.

The previous prime is 20286359. The next prime is 20286367. The reversal of 20286366 is 66368202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286367) 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, 4671 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (2545425).

Almost surely, 2^20286366 is an apocalyptic number.

20286366 is an abundant number, since it is smaller than the sum of its proper divisors (20440434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20286366 is a wasteful number, since it uses less digits than its factorization.

20286366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20286366 is about 4504.0388541841. The cubic root of 20286366 is about 272.7311553185.

It can be divided in two parts, 202 and 86366, that added together give a palindrome (86568).

The spelling of 20286366 in words is "twenty million, two hundred eighty-six thousand, three hundred sixty-six".