20090112 has 144 divisors (see below), whose sum is σ = 63380352. Its totient is φ = 5529600.

The previous prime is 20090099. The next prime is 20090129. The reversal of 20090112 is 21109002.

It is a happy number.

It is a super-2 number, since 2×20090112² = 807225200345088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20090091 and 20090100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198862 + ... + 198962.

Almost surely, 2^20090112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20090112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31690176).

20090112 is an abundant number, since it is smaller than the sum of its proper divisors (43290240).

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

20090112 is a wasteful number, since it uses less digits than its factorization.

20090112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 20090112 is about 4482.1994600865. The cubic root of 20090112 is about 271.8488202563.

Adding to 20090112 its reverse (21109002), we get a palindrome (41199114).

It can be divided in two parts, 20090 and 112, that added together give a palindrome (20202).

The spelling of 20090112 in words is "twenty million, ninety thousand, one hundred twelve".