20089321 has 8 divisors (see below), whose sum is σ = 23042624. Its totient is φ = 17156880.

The previous prime is 20089309. The next prime is 20089337. The reversal of 20089321 is 12398002.

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 20089321 - 2⁷ = 20089193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20089301) 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, 3090 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (2880328).

Almost surely, 2^20089321 is an apocalyptic number.

It is an amenable number.

20089321 is a deficient number, since it is larger than the sum of its proper divisors (2953303).

20089321 is a wasteful number, since it uses less digits than its factorization.

20089321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20089321 is about 4482.1112212885. Note that the first 3 decimals coincide. The cubic root of 20089321 is about 271.8452524109.

The spelling of 20089321 in words is "twenty million, eighty-nine thousand, three hundred twenty-one".