20268966 has 16 divisors (see below), whose sum is σ = 40583088. Its totient is φ = 6748800.

The previous prime is 20268959. The next prime is 20268967. The reversal of 20268966 is 66986202.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268967) 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 7 ways as a sum of consecutive naturals, for example, 7746 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (2536443).

Almost surely, 2^20268966 is an apocalyptic number.

20268966 is an abundant number, since it is smaller than the sum of its proper divisors (20314122).

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

20268966 is a wasteful number, since it uses less digits than its factorization.

20268966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20268966 is about 4502.1068401361. The cubic root of 20268966 is about 272.6531574565.

The spelling of 20268966 in words is "twenty million, two hundred sixty-eight thousand, nine hundred sixty-six".