12756478 has 16 divisors (see below), whose sum is σ = 21924864. Its totient is φ = 5452920.

The previous prime is 12756473. The next prime is 12756479. The reversal of 12756478 is 87465721.

It is a self number, because there is not a number n which added to its sum of digits gives 12756478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12756473) 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, 5883 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (1370304).

Almost surely, 2^12756478 is an apocalyptic number.

12756478 is a deficient number, since it is larger than the sum of its proper divisors (9168386).

12756478 is a wasteful number, since it uses less digits than its factorization.

12756478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its digits is 94080, while the sum is 40.

The square root of 12756478 is about 3571.6212005195. The cubic root of 12756478 is about 233.6559948764.

The spelling of 12756478 in words is "twelve million, seven hundred fifty-six thousand, four hundred seventy-eight".