1280516748 has 48 divisors (see below), whose sum is σ = 3416609280. Its totient is φ = 365658624.

The previous prime is 1280516689. The next prime is 1280516771. The reversal of 1280516748 is 8476150821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214873 + ... + 220751.

It is an arithmetic number, because the mean of its divisors is an integer number (71179360).

Almost surely, 2^1280516748 is an apocalyptic number.

It is an amenable number.

1280516748 is an abundant number, since it is smaller than the sum of its proper divisors (2136092532).

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

1280516748 is a wasteful number, since it uses less digits than its factorization.

1280516748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8486 (or 8484 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 1280516748 is about 35784.3086841146. The cubic root of 1280516748 is about 1085.9131384254.

The spelling of 1280516748 in words is "one billion, two hundred eighty million, five hundred sixteen thousand, seven hundred forty-eight".