12496638 has 48 divisors (see below), whose sum is σ = 31409280. Its totient is φ = 3244560.

The previous prime is 12496633. The next prime is 12496657. The reversal of 12496638 is 83669421.

It is a super-2 number, since 2×12496638² = 312331922606088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12496596 and 12496605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12496633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3853 + ... + 6311.

It is an arithmetic number, because the mean of its divisors is an integer number (654360).

Almost surely, 2^12496638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12496638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15704640).

12496638 is an abundant number, since it is smaller than the sum of its proper divisors (18912642).

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

12496638 is a wasteful number, since it uses less digits than its factorization.

12496638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493 (or 2482 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 12496638 is about 3535.0584153589. The cubic root of 12496638 is about 232.0586331194.

It can be divided in two parts, 1249 and 6638, that added together give a palindrome (7887).

The spelling of 12496638 in words is "twelve million, four hundred ninety-six thousand, six hundred thirty-eight".