20043265 has 8 divisors (see below), whose sum is σ = 26238528. Its totient is φ = 14576880.

The previous prime is 20043259. The next prime is 20043269. The reversal of 20043265 is 56234002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20043265 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20043269) 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, 182157 + ... + 182266.

It is an arithmetic number, because the mean of its divisors is an integer number (3279816).

Almost surely, 2^20043265 is an apocalyptic number.

It is an amenable number.

20043265 is a deficient number, since it is larger than the sum of its proper divisors (6195263).

20043265 is a wasteful number, since it uses less digits than its factorization.

20043265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364439.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20043265 is about 4476.9705158734. The cubic root of 20043265 is about 271.6373528200.

Adding to 20043265 its reverse (56234002), we get a palindrome (76277267).

The spelling of 20043265 in words is "twenty million, forty-three thousand, two hundred sixty-five".