12996440 has 64 divisors (see below), whose sum is σ = 30965760. Its totient is φ = 4901760.

The previous prime is 12996433. The next prime is 12996457. The reversal of 12996440 is 4469921.

12996440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12996440.

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, 58169 + ... + 58391.

It is an arithmetic number, because the mean of its divisors is an integer number (483840).

Almost surely, 2^12996440 is an apocalyptic number.

12996440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12996440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15482880).

12996440 is an abundant number, since it is smaller than the sum of its proper divisors (17969320).

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

12996440 is a wasteful number, since it uses less digits than its factorization.

12996440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12996440 is about 3605.0575584864. The cubic root of 12996440 is about 235.1120033472.

It can be divided in two parts, 129 and 96440, that added together give a palindrome (96569).

The spelling of 12996440 in words is "twelve million, nine hundred ninety-six thousand, four hundred forty".