20889323 has 8 divisors (see below), whose sum is σ = 25710048. Its totient is φ = 16527744.

The previous prime is 20889299. The next prime is 20889347. The reversal of 20889323 is 32398802.

It is an interprime number because it is at equal distance from previous prime (20889299) and next prime (20889347).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20889323 - 2¹⁰ = 20888299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20889373) 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, 114686 + ... + 114867.

It is an arithmetic number, because the mean of its divisors is an integer number (3213756).

Almost surely, 2^20889323 is an apocalyptic number.

20889323 is a deficient number, since it is larger than the sum of its proper divisors (4820725).

20889323 is a wasteful number, since it uses less digits than its factorization.

20889323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229573.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20889323 is about 4570.4838912308. The cubic root of 20889323 is about 275.4068819899.

It can be divided in two parts, 20889 and 323, that added together give a palindrome (21212).

The spelling of 20889323 in words is "twenty million, eight hundred eighty-nine thousand, three hundred twenty-three".