20410889 has 4 divisors (see below), whose sum is σ = 20427924. Its totient is φ = 20393856.

The previous prime is 20410879. The next prime is 20410891. The reversal of 20410889 is 98801402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19758025 + 652864 = 4445^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 20410889 - 2⁸ = 20410633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20410849) 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, 6572 + ... + 9165.

It is an arithmetic number, because the mean of its divisors is an integer number (5106981).

Almost surely, 2^20410889 is an apocalyptic number.

It is an amenable number.

20410889 is a deficient number, since it is larger than the sum of its proper divisors (17035).

20410889 is a wasteful number, since it uses less digits than its factorization.

20410889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 20410889 is about 4517.8411880012. The cubic root of 20410889 is about 273.2880490450.

The spelling of 20410889 in words is "twenty million, four hundred ten thousand, eight hundred eighty-nine".