20882266 has 4 divisors (see below), whose sum is σ = 31323402. Its totient is φ = 10441132.

The previous prime is 20882263. The next prime is 20882269. The reversal of 20882266 is 66228802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66228802 = 2 ⋅33114401.

It is an interprime number because it is at equal distance from previous prime (20882263) and next prime (20882269).

It can be written as a sum of positive squares in only one way, i.e., 19492225 + 1390041 = 4415^2 + 1179^2 .

It is not an unprimeable number, because it can be changed into a prime (20882261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220565 + ... + 5220568.

Almost surely, 2^20882266 is an apocalyptic number.

20882266 is a deficient number, since it is larger than the sum of its proper divisors (10441136).

20882266 is a wasteful number, since it uses less digits than its factorization.

20882266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10441135.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20882266 is about 4569.7118071056. The cubic root of 20882266 is about 275.3758651036.

The spelling of 20882266 in words is "twenty million, eight hundred eighty-two thousand, two hundred sixty-six".