1281208260 has 48 divisors (see below), whose sum is σ = 3600196992. Its totient is φ = 340435200.

The previous prime is 1281208223. The next prime is 1281208289. The reversal of 1281208260 is 628021821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21136 + ... + 54855.

It is an arithmetic number, because the mean of its divisors is an integer number (75004104).

Almost surely, 2^1281208260 is an apocalyptic number.

1281208260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281208260 is an abundant number, since it is smaller than the sum of its proper divisors (2318988732).

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

1281208260 is a wasteful number, since it uses less digits than its factorization.

1281208260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76284 (or 76282 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1281208260 is about 35793.9696038313. The cubic root of 1281208260 is about 1086.1085769299.

The spelling of 1281208260 in words is "one billion, two hundred eighty-one million, two hundred eight thousand, two hundred sixty".