1278608260 has 48 divisors (see below), whose sum is σ = 2852786160. Its totient is φ = 480453120.

The previous prime is 1278608239. The next prime is 1278608321. The reversal of 1278608260 is 628068721.

It can be written as a sum of positive squares in 8 ways, for example, as 102941316 + 1175666944 = 10146^2 + 34288^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8331 + ... + 51250.

It is an arithmetic number, because the mean of its divisors is an integer number (59433045).

Almost surely, 2^1278608260 is an apocalyptic number.

1278608260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1278608260 is an abundant number, since it is smaller than the sum of its proper divisors (1574177900).

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

1278608260 is a wasteful number, since it uses less digits than its factorization.

1278608260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59656 (or 59654 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1278608260 is about 35757.6321923027. The cubic root of 1278608260 is about 1085.3733868895.

The spelling of 1278608260 in words is "one billion, two hundred seventy-eight million, six hundred eight thousand, two hundred sixty".