1276478 has 16 divisors (see below), whose sum is σ = 2220000. Its totient is φ = 539136.

The previous prime is 1276447. The next prime is 1276481. The reversal of 1276478 is 8746721.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (138750).

2^1276478 is an apocalyptic number.

1276478 is a deficient number, since it is larger than the sum of its proper divisors (943522).

1276478 is a wasteful number, since it uses less digits than its factorization.

1276478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331.

The product of its digits is 18816, while the sum is 35.

The square root of 1276478 is about 1129.8132589061. The cubic root of 1276478 is about 108.4770279893.

The spelling of 1276478 in words is "one million, two hundred seventy-six thousand, four hundred seventy-eight".