20833136 has 40 divisors (see below), whose sum is σ = 42519600. Its totient is φ = 9873920.

The previous prime is 20833133. The next prime is 20833157. The reversal of 20833136 is 63133802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20833133) 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, 26996 + ... + 27756.

It is an arithmetic number, because the mean of its divisors is an integer number (1062990).

Almost surely, 2^20833136 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 20833136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21259800).

20833136 is an abundant number, since it is smaller than the sum of its proper divisors (21686464).

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

20833136 is a wasteful number, since it uses less digits than its factorization.

20833136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20833136 is about 4564.3330290416. Note that the first 3 decimals coincide. The cubic root of 20833136 is about 275.1597352981.

Adding to 20833136 its reverse (63133802), we get a palindrome (83966938).

The spelling of 20833136 in words is "twenty million, eight hundred thirty-three thousand, one hundred thirty-six".