12936440 has 32 divisors (see below), whose sum is σ = 31754160. Its totient is φ = 4704000.

The previous prime is 12936437. The next prime is 12936449. The reversal of 12936440 is 4463921.

12936440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12936449) 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, 14261 + ... + 15140.

Almost surely, 2^12936440 is an apocalyptic number.

12936440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12936440 is an abundant number, since it is smaller than the sum of its proper divisors (18817720).

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

12936440 is a wasteful number, since it uses less digits than its factorization.

12936440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423 (or 29419 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12936440 is about 3596.7262892803. The cubic root of 12936440 is about 234.7496352771.

The spelling of 12936440 in words is "twelve million, nine hundred thirty-six thousand, four hundred forty".