20268799 has 2 divisors, whose sum is σ = 20268800. Its totient is φ = 20268798.

The previous prime is 20268791. The next prime is 20268817. The reversal of 20268799 is 99786202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20268799 - 2³ = 20268791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20268791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10134399 + 10134400.

It is an arithmetic number, because the mean of its divisors is an integer number (10134400).

Almost surely, 2^20268799 is an apocalyptic number.

20268799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20268799 is an equidigital number, since it uses as much as digits as its factorization.

20268799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 20268799 is about 4502.0882932257. The cubic root of 20268799 is about 272.6524086401.

The spelling of 20268799 in words is "twenty million, two hundred sixty-eight thousand, seven hundred ninety-nine".