20360289 has 8 divisors (see below), whose sum is σ = 27168832. Its totient is φ = 13562640.

The previous prime is 20360279. The next prime is 20360293. The reversal of 20360289 is 98206302.

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

It is not a de Polignac number, because 20360289 - 2¹¹ = 20358241 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 (20360279) 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, 4044 + ... + 7554.

It is an arithmetic number, because the mean of its divisors is an integer number (3396104).

Almost surely, 2^20360289 is an apocalyptic number.

It is an amenable number.

20360289 is a deficient number, since it is larger than the sum of its proper divisors (6808543).

20360289 is a wasteful number, since it uses less digits than its factorization.

20360289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20360289 is about 4512.2376932072. The cubic root of 20360289 is about 273.0620288684.

The spelling of 20360289 in words is "twenty million, three hundred sixty thousand, two hundred eighty-nine".