1278064 has 30 divisors (see below), whose sum is σ = 2605736. Its totient is φ = 607200.

The previous prime is 1278047. The next prime is 1278097. The reversal of 1278064 is 4608721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8389 + ... + 8539.

2^1278064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302868).

1278064 is an abundant number, since it is smaller than the sum of its proper divisors (1327672).

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

1278064 is a wasteful number, since it uses less digits than its factorization.

1278064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1278064 is about 1130.5149269249. The cubic root of 1278064 is about 108.5219362869.

The spelling of 1278064 in words is "one million, two hundred seventy-eight thousand, sixty-four".