20802112 has 28 divisors (see below), whose sum is σ = 43454320. Its totient is φ = 9853056.

The previous prime is 20802107. The next prime is 20802113. The reversal of 20802112 is 21120802.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20802113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7338 + ... + 9769.

It is an arithmetic number, because the mean of its divisors is an integer number (1551940).

Almost surely, 2^20802112 is an apocalyptic number.

It is an amenable number.

20802112 is an abundant number, since it is smaller than the sum of its proper divisors (22652208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20802112 is a wasteful number, since it uses less digits than its factorization.

20802112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17138 (or 17128 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 20802112 is about 4560.9332378363. The cubic root of 20802112 is about 275.0230812583.

Adding to 20802112 its reverse (21120802), we get a palindrome (41922914).

The spelling of 20802112 in words is "twenty million, eight hundred two thousand, one hundred twelve".