20266879 has 8 divisors (see below), whose sum is σ = 20718720. Its totient is φ = 19819800.

The previous prime is 20266877. The next prime is 20266927. The reversal of 20266879 is 97866202.

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

It is a cyclic number.

It is not a de Polignac number, because 20266879 - 2¹ = 20266877 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 (20266871) 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, 8212 + ... + 10390.

It is an arithmetic number, because the mean of its divisors is an integer number (2589840).

Almost surely, 2^20266879 is an apocalyptic number.

20266879 is a deficient number, since it is larger than the sum of its proper divisors (451841).

20266879 is a wasteful number, since it uses less digits than its factorization.

20266879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20266879 is about 4501.8750537970. The cubic root of 20266879 is about 272.6437991980.

It can be divided in two parts, 202 and 66879, that added together give a square (67081 = 259²).

The spelling of 20266879 in words is "twenty million, two hundred sixty-six thousand, eight hundred seventy-nine".