20822290 has 32 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 7616448.

The previous prime is 20822287. The next prime is 20822299. The reversal of 20822290 is 9222802.

It is not an unprimeable number, because it can be changed into a prime (20822299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3621 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 2^20822290 is an apocalyptic number.

20822290 is a deficient number, since it is larger than the sum of its proper divisors (20001710).

20822290 is a wasteful number, since it uses less digits than its factorization.

20822290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20822290 is about 4563.1447489642. The cubic root of 20822290 is about 275.1119764370. Note that the first 3 decimals are identical.

It can be divided in two parts, 20822 and 290, that added together give a palindrome (21112).

The spelling of 20822290 in words is "twenty million, eight hundred twenty-two thousand, two hundred ninety".