20344266 has 12 divisors (see below), whose sum is σ = 44079282. Its totient is φ = 6781416.

The previous prime is 20344249. The next prime is 20344267. The reversal of 20344266 is 66244302.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 7535025 = 3579^2 + 2745^2 .

It is not an unprimeable number, because it can be changed into a prime (20344267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565101 + ... + 565136.

Almost surely, 2^20344266 is an apocalyptic number.

20344266 is an abundant number, since it is smaller than the sum of its proper divisors (23735016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344266 is a wasteful number, since it uses less digits than its factorization.

20344266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130245 (or 1130242 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 20344266 is about 4510.4618388808. The cubic root of 20344266 is about 272.9903792447.

Adding to 20344266 its reverse (66244302), we get a palindrome (86588568).

The spelling of 20344266 in words is "twenty million, three hundred forty-four thousand, two hundred sixty-six".