20112282 has 12 divisors (see below), whose sum is σ = 43576650. Its totient is φ = 6704088.

The previous prime is 20112277. The next prime is 20112319. The reversal of 20112282 is 28221102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10246401 + 9865881 = 3201^2 + 3141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1117349 = 20112282 / (2 + 0 + 1 + 1 + 2 + 2 + 8 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 558657 + ... + 558692.

Almost surely, 2^20112282 is an apocalyptic number.

20112282 is an abundant number, since it is smaller than the sum of its proper divisors (23464368).

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

20112282 is a wasteful number, since it uses less digits than its factorization.

20112282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117357 (or 1117354 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20112282 is about 4484.6718943530. The cubic root of 20112282 is about 271.9487810854.

Adding to 20112282 its reverse (28221102), we get a palindrome (48333384).

The spelling of 20112282 in words is "twenty million, one hundred twelve thousand, two hundred eighty-two".