12748278 has 16 divisors (see below), whose sum is σ = 26838720. Its totient is φ = 4025736.

The previous prime is 12748277. The next prime is 12748289. The reversal of 12748278 is 87284721.

12748278 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12748277) 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, 55800 + ... + 56027.

It is an arithmetic number, because the mean of its divisors is an integer number (1677420).

Almost surely, 2^12748278 is an apocalyptic number.

12748278 is an abundant number, since it is smaller than the sum of its proper divisors (14090442).

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

12748278 is a wasteful number, since it uses less digits than its factorization.

12748278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111851.

The product of its digits is 50176, while the sum is 39.

The square root of 12748278 is about 3570.4730778988. The cubic root of 12748278 is about 233.6059186239.

The spelling of 12748278 in words is "twelve million, seven hundred forty-eight thousand, two hundred seventy-eight".