20589797 has 16 divisors (see below), whose sum is σ = 22617600. Its totient is φ = 18688320.

The previous prime is 20589791. The next prime is 20589799. The reversal of 20589797 is 79798502.

It is a cyclic number.

It is not a de Polignac number, because 20589797 - 2¹² = 20585701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20589791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32954 + ... + 33572.

It is an arithmetic number, because the mean of its divisors is an integer number (1413600).

Almost surely, 2^20589797 is an apocalyptic number.

It is an amenable number.

20589797 is a deficient number, since it is larger than the sum of its proper divisors (2027803).

20589797 is a wasteful number, since it uses less digits than its factorization.

20589797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 20589797 is about 4537.5981532084. The cubic root of 20589797 is about 274.0842131968.

The spelling of 20589797 in words is "twenty million, five hundred eighty-nine thousand, seven hundred ninety-seven".