20266379 has 8 divisors (see below), whose sum is σ = 23210208. Its totient is φ = 17334720.

The previous prime is 20266349. The next prime is 20266391. The reversal of 20266379 is 97366202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20266379 is a prime.

It is a super-2 number, since 2×20266379² = 821452235543282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20266349) 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, 869 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (2901276).

Almost surely, 2^20266379 is an apocalyptic number.

20266379 is a deficient number, since it is larger than the sum of its proper divisors (2943829).

20266379 is an equidigital number, since it uses as much as digits as its factorization.

20266379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6085.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20266379 is about 4501.8195210381. The cubic root of 20266379 is about 272.6415570665.

The spelling of 20266379 in words is "twenty million, two hundred sixty-six thousand, three hundred seventy-nine".