20966822 has 4 divisors (see below), whose sum is σ = 31450236. Its totient is φ = 10483410.

The previous prime is 20966821. The next prime is 20966849. The reversal of 20966822 is 22866902.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5241704 + ... + 5241707.

It is an arithmetic number, because the mean of its divisors is an integer number (7862559).

Almost surely, 2^20966822 is an apocalyptic number.

20966822 is a deficient number, since it is larger than the sum of its proper divisors (10483414).

20966822 is a wasteful number, since it uses less digits than its factorization.

20966822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483413.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20966822 is about 4578.9542474237. The cubic root of 20966822 is about 275.7470464722.

The spelling of 20966822 in words is "twenty million, nine hundred sixty-six thousand, eight hundred twenty-two".