12690112 has 56 divisors (see below), whose sum is σ = 27102816. Its totient is φ = 5879808.

The previous prime is 12690103. The next prime is 12690113. The reversal of 12690112 is 21109621.

It is a super-2 number, since 2×12690112² = 322077885145088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12690113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54348 + ... + 54580.

Almost surely, 2^12690112 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 12690112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13551408).

12690112 is an abundant number, since it is smaller than the sum of its proper divisors (14412704).

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

12690112 is a wasteful number, since it uses less digits than its factorization.

12690112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 12690112 is about 3562.3183462459. The cubic root of 12690112 is about 233.2500891261.

Adding to 12690112 its reverse (21109621), we get a palindrome (33799733).

The spelling of 12690112 in words is "twelve million, six hundred ninety thousand, one hundred twelve".