20268707 has 4 divisors (see below), whose sum is σ = 20382120. Its totient is φ = 20155296.

The previous prime is 20268701. The next prime is 20268733. The reversal of 20268707 is 70786202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20268707 - 2⁴ = 20268691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20268701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56438 + ... + 56795.

It is an arithmetic number, because the mean of its divisors is an integer number (5095530).

Almost surely, 2^20268707 is an apocalyptic number.

20268707 is a deficient number, since it is larger than the sum of its proper divisors (113413).

20268707 is a wasteful number, since it uses less digits than its factorization.

20268707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113412.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20268707 is about 4502.0780757335. The cubic root of 20268707 is about 272.6519961168.

The spelling of 20268707 in words is "twenty million, two hundred sixty-eight thousand, seven hundred seven".