20135266 has 8 divisors (see below), whose sum is σ = 30905424. Its totient is φ = 9833460.

The previous prime is 20135263. The next prime is 20135267. The reversal of 20135266 is 66253102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20135266.

It is not an unprimeable number, because it can be changed into a prime (20135261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116980 + ... + 117151.

It is an arithmetic number, because the mean of its divisors is an integer number (3863178).

Almost surely, 2^20135266 is an apocalyptic number.

20135266 is a deficient number, since it is larger than the sum of its proper divisors (10770158).

20135266 is a wasteful number, since it uses less digits than its factorization.

20135266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234176.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20135266 is about 4487.2336689769. The cubic root of 20135266 is about 272.0523345809.

Adding to 20135266 its reverse (66253102), we get a palindrome (86388368).

The spelling of 20135266 in words is "twenty million, one hundred thirty-five thousand, two hundred sixty-six".