1278148 has 12 divisors (see below), whose sum is σ = 2279340. Its totient is φ = 626912.

The previous prime is 1278139. The next prime is 1278163. The reversal of 1278148 is 8418721.

It can be written as a sum of positive squares in 2 ways, for example, as 1077444 + 200704 = 1038^2 + 448^2 .

It is a super-3 number, since 3×1278148³ = 6264186642237533376, which contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2803 + ... + 3226.

It is an arithmetic number, because the mean of its divisors is an integer number (189945).

2^1278148 is an apocalyptic number.

It is an amenable number.

1278148 is a deficient number, since it is larger than the sum of its proper divisors (1001192).

1278148 is a wasteful number, since it uses less digits than its factorization.

1278148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086 (or 6084 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 1278148 is about 1130.5520775267. The cubic root of 1278148 is about 108.5243137481.

The spelling of 1278148 in words is "one million, two hundred seventy-eight thousand, one hundred forty-eight".