20785893 has 8 divisors (see below), whose sum is σ = 28390656. Its totient is φ = 13519200.

The previous prime is 20785873. The next prime is 20785913. The reversal of 20785893 is 39858702.

It is an interprime number because it is at equal distance from previous prime (20785873) and next prime (20785913).

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

It is not a de Polignac number, because 20785893 - 2¹⁴ = 20769509 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20785873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84373 + ... + 84618.

It is an arithmetic number, because the mean of its divisors is an integer number (3548832).

Almost surely, 2^20785893 is an apocalyptic number.

It is an amenable number.

20785893 is a deficient number, since it is larger than the sum of its proper divisors (7604763).

20785893 is a wasteful number, since it uses less digits than its factorization.

20785893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169035.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 20785893 is about 4559.1548558916. The cubic root of 20785893 is about 274.9515859675.

The spelling of 20785893 in words is "twenty million, seven hundred eighty-five thousand, eight hundred ninety-three".