20589091 has 8 divisors (see below), whose sum is σ = 21848400. Its totient is φ = 19335168.

The previous prime is 20589073. The next prime is 20589109. The reversal of 20589091 is 19098502.

It is an interprime number because it is at equal distance from previous prime (20589073) and next prime (20589109).

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 20589091 - 2¹³ = 20580899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20589031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8760 + ... + 10858.

It is an arithmetic number, because the mean of its divisors is an integer number (2731050).

Almost surely, 2^20589091 is an apocalyptic number.

20589091 is a deficient number, since it is larger than the sum of its proper divisors (1259309).

20589091 is a wasteful number, since it uses less digits than its factorization.

20589091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 20589091 is about 4537.5203580811. The cubic root of 20589091 is about 274.0810804856.

The spelling of 20589091 in words is "twenty million, five hundred eighty-nine thousand, ninety-one".