20934089 has 12 divisors (see below), whose sum is σ = 24366132. Its totient is φ = 17909760.

The previous prime is 20934073. The next prime is 20934097. The reversal of 20934089 is 98043902.

20934089 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 15077689 + 5856400 = 3883^2 + 2420^2 .

It is not a de Polignac number, because 20934089 - 2⁴ = 20934073 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 (20934019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3032 + ... + 7145.

It is an arithmetic number, because the mean of its divisors is an integer number (2030511).

Almost surely, 2^20934089 is an apocalyptic number.

It is an amenable number.

20934089 is a deficient number, since it is larger than the sum of its proper divisors (3432043).

20934089 is a wasteful number, since it uses less digits than its factorization.

20934089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216 (or 10205 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20934089 is about 4575.3785635726. The cubic root of 20934089 is about 275.6034747340.

The spelling of 20934089 in words is "twenty million, nine hundred thirty-four thousand, eighty-nine".