20089065 has 16 divisors (see below), whose sum is σ = 32198400. Its totient is φ = 10695552.

The previous prime is 20089063. The next prime is 20089073. The reversal of 20089065 is 56098002.

It is not a de Polignac number, because 20089065 - 2¹ = 20089063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20089063) 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 15 ways as a sum of consecutive naturals, for example, 14941 + ... + 16229.

It is an arithmetic number, because the mean of its divisors is an integer number (2012400).

Almost surely, 2^20089065 is an apocalyptic number.

It is an amenable number.

20089065 is a deficient number, since it is larger than the sum of its proper divisors (12109335).

20089065 is a wasteful number, since it uses less digits than its factorization.

20089065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20089065 is about 4482.0826632270. The cubic root of 20089065 is about 271.8440976899.

The spelling of 20089065 in words is "twenty million, eighty-nine thousand, sixty-five".