20802086 has 8 divisors (see below), whose sum is σ = 31506384. Its totient is φ = 10299960.

The previous prime is 20802083. The next prime is 20802107. The reversal of 20802086 is 68020802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20802083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50285 + ... + 50696.

It is an arithmetic number, because the mean of its divisors is an integer number (3938298).

Almost surely, 2^20802086 is an apocalyptic number.

20802086 is a deficient number, since it is larger than the sum of its proper divisors (10704298).

20802086 is a wasteful number, since it uses less digits than its factorization.

20802086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101086.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20802086 is about 4560.9303875416. The cubic root of 20802086 is about 275.0229666769.

Adding to 20802086 its reverse (68020802), we get a palindrome (88822888).

The spelling of 20802086 in words is "twenty million, eight hundred two thousand, eighty-six".