20263105 has 16 divisors (see below), whose sum is σ = 25217280. Its totient is φ = 15619968.

The previous prime is 20263097. The next prime is 20263109. The reversal of 20263105 is 50136202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20263105 - 2³ = 20263097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20263109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16389 + ... + 17581.

It is an arithmetic number, because the mean of its divisors is an integer number (1576080).

Almost surely, 2^20263105 is an apocalyptic number.

It is an amenable number.

20263105 is a deficient number, since it is larger than the sum of its proper divisors (4954175).

20263105 is a wasteful number, since it uses less digits than its factorization.

20263105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20263105 is about 4501.4558756029. The cubic root of 20263105 is about 272.6268746784.

Adding to 20263105 its reverse (50136202), we get a palindrome (70399307).

The spelling of 20263105 in words is "twenty million, two hundred sixty-three thousand, one hundred five".