20133936 has 60 divisors (see below), whose sum is σ = 57016440. Its totient is φ = 6631680.

The previous prime is 20133889. The next prime is 20133937. The reversal of 20133936 is 63933102.

It is not an unprimeable number, because it can be changed into a prime (20133937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12031 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (950274).

Almost surely, 2^20133936 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 20133936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28508220).

20133936 is an abundant number, since it is smaller than the sum of its proper divisors (36882504).

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

20133936 is a wasteful number, since it uses less digits than its factorization.

20133936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1665 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 20133936 is about 4487.0854683191. The cubic root of 20133936 is about 272.0463444677.

It can be divided in two parts, 20 and 133936, that added together give a square (133956 = 366²).

The spelling of 20133936 in words is "twenty million, one hundred thirty-three thousand, nine hundred thirty-six".