12743478 has 36 divisors (see below), whose sum is σ = 30354324. Its totient is φ = 3861000.

The previous prime is 12743477. The next prime is 12743483. The reversal of 12743478 is 87434721.

It is a happy number.

12743478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12743477) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 748 + ... + 5103.

Almost surely, 2^12743478 is an apocalyptic number.

12743478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12743478 is an abundant number, since it is smaller than the sum of its proper divisors (17610846).

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

12743478 is a wasteful number, since it uses less digits than its factorization.

12743478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 5867 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 12743478 is about 3569.8008347806. The cubic root of 12743478 is about 233.5765957310.

The spelling of 12743478 in words is "twelve million, seven hundred forty-three thousand, four hundred seventy-eight".