20810112 has 32 divisors (see below), whose sum is σ = 55277880. Its totient is φ = 6936576.

The previous prime is 20810071. The next prime is 20810117. The reversal of 20810112 is 21101802.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20810112² = 866121522905088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20810091 and 20810100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20810117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26713 + ... + 27480.

Almost surely, 2^20810112 is an apocalyptic number.

It is an amenable number.

20810112 is an abundant number, since it is smaller than the sum of its proper divisors (34467768).

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

20810112 is an equidigital number, since it uses as much as digits as its factorization.

20810112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210 (or 54198 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 20810112 is about 4561.8101670280. The cubic root of 20810112 is about 275.0583325293.

Adding to 20810112 its reverse (21101802), we get a palindrome (41911914).

The spelling of 20810112 in words is "twenty million, eight hundred ten thousand, one hundred twelve".