1280883144 has 32 divisors (see below), whose sum is σ = 3225589920. Its totient is φ = 423843456.

The previous prime is 1280883113. The next prime is 1280883161. The reversal of 1280883144 is 4413880821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191494 + ... + 198069.

It is an arithmetic number, because the mean of its divisors is an integer number (100799685).

Almost surely, 2^1280883144 is an apocalyptic number.

It is an amenable number.

1280883144 is an abundant number, since it is smaller than the sum of its proper divisors (1944706776).

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

1280883144 is a wasteful number, since it uses less digits than its factorization.

1280883144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389709 (or 389705 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 1280883144 is about 35789.4278244288. The cubic root of 1280883144 is about 1086.0166998168.

The spelling of 1280883144 in words is "one billion, two hundred eighty million, eight hundred eighty-three thousand, one hundred forty-four".