20889411 has 4 divisors (see below), whose sum is σ = 27852552. Its totient is φ = 13926272.

The previous prime is 20889409. The next prime is 20889433. The reversal of 20889411 is 11498802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20889411 - 2¹ = 20889409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20889811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481566 + ... + 3481571.

It is an arithmetic number, because the mean of its divisors is an integer number (6963138).

Almost surely, 2^20889411 is an apocalyptic number.

20889411 is a deficient number, since it is larger than the sum of its proper divisors (6963141).

20889411 is an equidigital number, since it uses as much as digits as its factorization.

20889411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963140.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 20889411 is about 4570.4935182100. The cubic root of 20889411 is about 275.4072687229.

The spelling of 20889411 in words is "twenty million, eight hundred eighty-nine thousand, four hundred eleven".