20126589 has 16 divisors (see below), whose sum is σ = 32473728. Its totient is φ = 10824192.

The previous prime is 20126569. The next prime is 20126597. The reversal of 20126589 is 98562102.

It is not a de Polignac number, because 20126589 - 2⁸ = 20126333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27832 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (2029608).

Almost surely, 2^20126589 is an apocalyptic number.

It is an amenable number.

20126589 is a deficient number, since it is larger than the sum of its proper divisors (12347139).

20126589 is a wasteful number, since it uses less digits than its factorization.

20126589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56404.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 20126589 is about 4486.2667107518. The cubic root of 20126589 is about 272.0132499673.

The spelling of 20126589 in words is "twenty million, one hundred twenty-six thousand, five hundred eighty-nine".