1276253160 has 256 divisors, whose sum is σ = 4779855360. Its totient is φ = 265420800.

The previous prime is 1276253159. The next prime is 1276253171. The reversal of 1276253160 is 613526721.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 796360 + ... + 797960.

It is an arithmetic number, because the mean of its divisors is an integer number (18671310).

Almost surely, 2^1276253160 is an apocalyptic number.

1276253160 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 1276253160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2389927680).

1276253160 is an abundant number, since it is smaller than the sum of its proper divisors (3503602200).

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

1276253160 is a wasteful number, since it uses less digits than its factorization.

1276253160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1276253160 is about 35724.6855829411. The cubic root of 1276253160 is about 1084.7065853441.

Adding to 1276253160 its reverse (613526721), we get a palindrome (1889779881).

The spelling of 1276253160 in words is "one billion, two hundred seventy-six million, two hundred fifty-three thousand, one hundred sixty".