12778546 has 8 divisors (see below), whose sum is σ = 20910384. Its totient is φ = 5808420.

The previous prime is 12778537. The next prime is 12778553. The reversal of 12778546 is 64587721.

12778546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12778499 and 12778508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290400 + ... + 290443.

It is an arithmetic number, because the mean of its divisors is an integer number (2613798).

Almost surely, 2^12778546 is an apocalyptic number.

12778546 is a deficient number, since it is larger than the sum of its proper divisors (8131838).

12778546 is a wasteful number, since it uses less digits than its factorization.

12778546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580856.

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

The square root of 12778546 is about 3574.7092189435. The cubic root of 12778546 is about 233.7906545625.

The spelling of 12778546 in words is "twelve million, seven hundred seventy-eight thousand, five hundred forty-six".