20012263 has 8 divisors (see below), whose sum is σ = 21107120. Its totient is φ = 18921600.

The previous prime is 20012261. The next prime is 20012287. The reversal of 20012263 is 36221002.

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 20012263 - 2¹ = 20012261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012261) 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, 16063 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (2638390).

Almost surely, 2^20012263 is an apocalyptic number.

20012263 is a deficient number, since it is larger than the sum of its proper divisors (1094857).

20012263 is a wasteful number, since it uses less digits than its factorization.

20012263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20012263 is about 4473.5067899803. The cubic root of 20012263 is about 271.4972284966.

Adding to 20012263 its reverse (36221002), we get a palindrome (56233265).

The spelling of 20012263 in words is "twenty million, twelve thousand, two hundred sixty-three".