1281160760 has 128 divisors (see below), whose sum is σ = 3214909440. Its totient is φ = 455616000.

The previous prime is 1281160759. The next prime is 1281160781. The reversal of 1281160760 is 670611821.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5643767 + ... + 5643993.

It is an arithmetic number, because the mean of its divisors is an integer number (25116480).

Almost surely, 2^1281160760 is an apocalyptic number.

1281160760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1281160760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607454720).

1281160760 is an abundant number, since it is smaller than the sum of its proper divisors (1933748680).

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

1281160760 is a wasteful number, since it uses less digits than its factorization.

1281160760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1281160760 is about 35793.3060780923. The cubic root of 1281160760 is about 1086.0951544972.

The spelling of 1281160760 in words is "one billion, two hundred eighty-one million, one hundred sixty thousand, seven hundred sixty".