20326266 has 48 divisors (see below), whose sum is σ = 46176000. Its totient is φ = 6454080.

The previous prime is 20326249. The next prime is 20326277. The reversal of 20326266 is 66262302.

It is a happy number.

20326266 is a `hidden beast` number, since 2 + 0 + 32 + 626 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40485 + ... + 40983.

It is an arithmetic number, because the mean of its divisors is an integer number (962000).

Almost surely, 2^20326266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20326266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23088000).

20326266 is an abundant number, since it is smaller than the sum of its proper divisors (25849734).

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

20326266 is a wasteful number, since it uses less digits than its factorization.

20326266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20326266 is about 4508.4660362478. The cubic root of 20326266 is about 272.9098442389.

Adding to 20326266 its reverse (66262302), we get a palindrome (86588568).

The spelling of 20326266 in words is "twenty million, three hundred twenty-six thousand, two hundred sixty-six".