20822072 has 16 divisors (see below), whose sum is σ = 39171600. Its totient is φ = 10376320.

The previous prime is 20822071. The next prime is 20822077. The reversal of 20822072 is 27022802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20822071) 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 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 6672.

It is an arithmetic number, because the mean of its divisors is an integer number (2448225).

Almost surely, 2^20822072 is an apocalyptic number.

It is an amenable number.

20822072 is a deficient number, since it is larger than the sum of its proper divisors (18349528).

20822072 is a wasteful number, since it uses less digits than its factorization.

20822072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8686 (or 8682 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20822072 is about 4563.1208618664. The cubic root of 20822072 is about 275.1110163342. Note that the first 3 decimals are identical.

Adding to 20822072 its reverse (27022802), we get a palindrome (47844874).

The spelling of 20822072 in words is "twenty million, eight hundred twenty-two thousand, seventy-two".