20684122 has 16 divisors (see below), whose sum is σ = 32876640. Its totient is φ = 9732528.

The previous prime is 20684117. The next prime is 20684143. The reversal of 20684122 is 22148602.

It is a happy number.

20684122 is nontrivially palindromic in base 13.

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, 4233 + ... + 7699.

It is an arithmetic number, because the mean of its divisors is an integer number (2054790).

Almost surely, 2^20684122 is an apocalyptic number.

20684122 is a deficient number, since it is larger than the sum of its proper divisors (12192518).

20684122 is a wasteful number, since it uses less digits than its factorization.

20684122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20684122 is about 4547.9799911609. The cubic root of 20684122 is about 274.5021162120.

The spelling of 20684122 in words is "twenty million, six hundred eighty-four thousand, one hundred twenty-two".