20065936 has 40 divisors (see below), whose sum is σ = 44265024. Its totient is φ = 8722560.

The previous prime is 20065931. The next prime is 20065939. The reversal of 20065936 is 63956002.

It is a junction number, because it is equal to n+sod(n) for n = 20065898 and 20065907.

It is not an unprimeable number, because it can be changed into a prime (20065931) 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, 1570 + ... + 6526.

Almost surely, 2^20065936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20065936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22132512).

20065936 is an abundant number, since it is smaller than the sum of its proper divisors (24199088).

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

20065936 is a wasteful number, since it uses less digits than its factorization.

20065936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999 (or 4993 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 20065936 is about 4479.5017580084. The cubic root of 20065936 is about 271.7397308507.

The spelling of 20065936 in words is "twenty million, sixty-five thousand, nine hundred thirty-six".