20989096 has 16 divisors (see below), whose sum is σ = 39447540. Its totient is φ = 10469760.

The previous prime is 20989093. The next prime is 20989103. The reversal of 20989096 is 69098902.

It can be written as a sum of positive squares in 2 ways, for example, as 20124196 + 864900 = 4486^2 + 930^2 .

It is not an unprimeable number, because it can be changed into a prime (20989093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786 + ... + 6526.

Almost surely, 2^20989096 is an apocalyptic number.

It is an amenable number.

20989096 is a deficient number, since it is larger than the sum of its proper divisors (18458444).

20989096 is a wasteful number, since it uses less digits than its factorization.

20989096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204 (or 6200 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 20989096 is about 4581.3858165407. The cubic root of 20989096 is about 275.8446580865.

The spelling of 20989096 in words is "twenty million, nine hundred eighty-nine thousand, ninety-six".