20071589 has 4 divisors (see below), whose sum is σ = 20112960. Its totient is φ = 20030220.

The previous prime is 20071573. The next prime is 20071603. The reversal of 20071589 is 98517002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20071589 - 2⁴ = 20071573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20071529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19949 + ... + 20930.

It is an arithmetic number, because the mean of its divisors is an integer number (5028240).

Almost surely, 2^20071589 is an apocalyptic number.

It is an amenable number.

20071589 is a deficient number, since it is larger than the sum of its proper divisors (41371).

20071589 is an equidigital number, since it uses as much as digits as its factorization.

20071589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41370.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 20071589 is about 4480.1326989276. The cubic root of 20071589 is about 271.7652467377.

The spelling of 20071589 in words is "twenty million, seventy-one thousand, five hundred eighty-nine".