20868333 has 16 divisors (see below), whose sum is σ = 30260160. Its totient is φ = 12738816.

The previous prime is 20868319. The next prime is 20868343. The reversal of 20868333 is 33386802.

It is not a de Polignac number, because 20868333 - 2⁶ = 20868269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20868294 and 20868303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3643 + ... + 7416.

It is an arithmetic number, because the mean of its divisors is an integer number (1891260).

Almost surely, 2^20868333 is an apocalyptic number.

It is an amenable number.

20868333 is a deficient number, since it is larger than the sum of its proper divisors (9391827).

20868333 is a wasteful number, since it uses less digits than its factorization.

20868333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20868333 is about 4568.1870583416. The cubic root of 20868333 is about 275.3146063370.

The spelling of 20868333 in words is "twenty million, eight hundred sixty-eight thousand, three hundred thirty-three".