1278894 has 8 divisors (see below), whose sum is σ = 2557800. Its totient is φ = 426296.

The previous prime is 1278881. The next prime is 1278899. The reversal of 1278894 is 4988721.

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

1278894 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106569 + ... + 106580.

It is an arithmetic number, because the mean of its divisors is an integer number (319725).

2^1278894 is an apocalyptic number.

1278894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1278894 is a wasteful number, since it uses less digits than its factorization.

1278894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213154.

The product of its digits is 32256, while the sum is 39.

The square root of 1278894 is about 1130.8819567046. The cubic root of 1278894 is about 108.5454232994.

The spelling of 1278894 in words is "one million, two hundred seventy-eight thousand, eight hundred ninety-four".