20089245 has 32 divisors (see below), whose sum is σ = 35418240. Its totient is φ = 9642240.

The previous prime is 20089231. The next prime is 20089247. The reversal of 20089245 is 54298002.

It is not a de Polignac number, because 20089245 - 2⁴ = 20089229 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (20089247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17427 + ... + 18543.

It is an arithmetic number, because the mean of its divisors is an integer number (1106820).

Almost surely, 2^20089245 is an apocalyptic number.

It is an amenable number.

20089245 is a deficient number, since it is larger than the sum of its proper divisors (15328995).

20089245 is a wasteful number, since it uses less digits than its factorization.

20089245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 20089245 is about 4482.1027431330. The cubic root of 20089245 is about 271.8449096041.

The spelling of 20089245 in words is "twenty million, eighty-nine thousand, two hundred forty-five".