20589121 has 8 divisors (see below), whose sum is σ = 23560064. Its totient is φ = 17625600.

The previous prime is 20589109. The next prime is 20589143. The reversal of 20589121 is 12198502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20589121 - 2¹⁹ = 20064833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20589121.

It is not an unprimeable number, because it can be changed into a prime (20589181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6796 + ... + 9346.

It is an arithmetic number, because the mean of its divisors is an integer number (2945008).

Almost surely, 2^20589121 is an apocalyptic number.

It is an amenable number.

20589121 is a deficient number, since it is larger than the sum of its proper divisors (2970943).

20589121 is a wasteful number, since it uses less digits than its factorization.

20589121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 20589121 is about 4537.5236638501. The cubic root of 20589121 is about 274.0812136051.

The spelling of 20589121 in words is "twenty million, five hundred eighty-nine thousand, one hundred twenty-one".