20851082 has 16 divisors (see below), whose sum is σ = 35833920. Its totient is φ = 8913888.

The previous prime is 20851007. The next prime is 20851097. The reversal of 20851082 is 28015802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4769 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (2239620).

Almost surely, 2^20851082 is an apocalyptic number.

20851082 is a deficient number, since it is larger than the sum of its proper divisors (14982838).

20851082 is a wasteful number, since it uses less digits than its factorization.

20851082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 20851082 is about 4566.2985009743. The cubic root of 20851082 is about 275.2387216365.

Adding to 20851082 its reverse (28015802), we get a palindrome (48866884).

The spelling of 20851082 in words is "twenty million, eight hundred fifty-one thousand, eighty-two".