20266807 has 8 divisors (see below), whose sum is σ = 22164480. Its totient is φ = 18378360.

The previous prime is 20266793. The next prime is 20266837. The reversal of 20266807 is 70866202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20266807 - 2¹⁹ = 19742519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2794 + ... + 6952.

It is an arithmetic number, because the mean of its divisors is an integer number (2770560).

Almost surely, 2^20266807 is an apocalyptic number.

20266807 is a deficient number, since it is larger than the sum of its proper divisors (1897673).

20266807 is a wasteful number, since it uses less digits than its factorization.

20266807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20266807 is about 4501.8670571220. The cubic root of 20266807 is about 272.6434763333.

The spelling of 20266807 in words is "twenty million, two hundred sixty-six thousand, eight hundred seven".