20085894 has 48 divisors (see below), whose sum is σ = 46392528. Its totient is φ = 6508512.

The previous prime is 20085889. The next prime is 20085899. The reversal of 20085894 is 49858002.

It is an interprime number because it is at equal distance from previous prime (20085889) and next prime (20085899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17424 + ... + 18540.

It is an arithmetic number, because the mean of its divisors is an integer number (966511).

Almost surely, 2^20085894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20085894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23196264).

20085894 is an abundant number, since it is smaller than the sum of its proper divisors (26306634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20085894 is a wasteful number, since it uses less digits than its factorization.

20085894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 20085894 is about 4481.7289074642. The cubic root of 20085894 is about 271.8297936727.

The spelling of 20085894 in words is "twenty million, eighty-five thousand, eight hundred ninety-four".