20683135 has 24 divisors (see below), whose sum is σ = 28900368. Its totient is φ = 14150400.

The previous prime is 20683127. The next prime is 20683139. The reversal of 20683135 is 53138602.

It is not a de Polignac number, because 20683135 - 2³ = 20683127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9280 + ... + 11290.

It is an arithmetic number, because the mean of its divisors is an integer number (1204182).

Almost surely, 2^20683135 is an apocalyptic number.

20683135 is a deficient number, since it is larger than the sum of its proper divisors (8217233).

20683135 is a wasteful number, since it uses less digits than its factorization.

20683135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20683135 is about 4547.8714801542. The cubic root of 20683135 is about 274.4977499337.

The spelling of 20683135 in words is "twenty million, six hundred eighty-three thousand, one hundred thirty-five".