20710893 has 16 divisors (see below), whose sum is σ = 33221120. Its totient is φ = 11211696.

The previous prime is 20710889. The next prime is 20710919. The reversal of 20710893 is 39801702.

It is a happy number.

It is not a de Polignac number, because 20710893 - 2² = 20710889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20710893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710853) 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 15 ways as a sum of consecutive naturals, for example, 25555 + ... + 26352.

It is an arithmetic number, because the mean of its divisors is an integer number (2076320).

Almost surely, 2^20710893 is an apocalyptic number.

It is an amenable number.

20710893 is a deficient number, since it is larger than the sum of its proper divisors (12510227).

20710893 is a wasteful number, since it uses less digits than its factorization.

20710893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51936.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20710893 is about 4550.9222142331. The cubic root of 20710893 is about 274.6204924881.

The spelling of 20710893 in words is "twenty million, seven hundred ten thousand, eight hundred ninety-three".