20685122 has 8 divisors (see below), whose sum is σ = 32028672. Its totient is φ = 10008900.

The previous prime is 20685101. The next prime is 20685131. The reversal of 20685122 is 22158602.

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

It is a junction number, because it is equal to n+sod(n) for n = 20685091 and 20685100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166754 + ... + 166877.

It is an arithmetic number, because the mean of its divisors is an integer number (4003584).

Almost surely, 2^20685122 is an apocalyptic number.

20685122 is a deficient number, since it is larger than the sum of its proper divisors (11343550).

20685122 is a wasteful number, since it uses less digits than its factorization.

20685122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333664.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20685122 is about 4548.0899287503. The cubic root of 20685122 is about 274.5065398579.

The spelling of 20685122 in words is "twenty million, six hundred eighty-five thousand, one hundred twenty-two".