1278484 has 12 divisors (see below), whose sum is σ = 2254644. Its totient is φ = 634304.

The previous prime is 1278481. The next prime is 1278493. The reversal of 1278484 is 4848721.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 685584 = 770^2 + 828^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 619 + ... + 1714.

It is an arithmetic number, because the mean of its divisors is an integer number (187887).

2^1278484 is an apocalyptic number.

It is an amenable number.

1278484 is a deficient number, since it is larger than the sum of its proper divisors (976160).

1278484 is a wasteful number, since it uses less digits than its factorization.

1278484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474 (or 2472 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 1278484 is about 1130.7006677278. The cubic root of 1278484 is about 108.5338225516.

The spelling of 1278484 in words is "one million, two hundred seventy-eight thousand, four hundred eighty-four".