1278456 has 16 divisors (see below), whose sum is σ = 3196200. Its totient is φ = 426144.

The previous prime is 1278439. The next prime is 1278463. The reversal of 1278456 is 6548721.

It is a congruent number.

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, 26611 + ... + 26658.

2^1278456 is an apocalyptic number.

It is an amenable number.

1278456 is an abundant number, since it is smaller than the sum of its proper divisors (1917744).

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

1278456 is a wasteful number, since it uses less digits than its factorization.

1278456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53278 (or 53274 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1278456 is about 1130.6882859568. The cubic root of 1278456 is about 108.5330302150.

The spelling of 1278456 in words is "one million, two hundred seventy-eight thousand, four hundred fifty-six".