1280049828 has 24 divisors (see below), whose sum is σ = 2989983360. Its totient is φ = 426226080.

The previous prime is 1280049787. The next prime is 1280049839. The reversal of 1280049828 is 8289400821.

It is a self number, because there is not a number n which added to its sum of digits gives 1280049828.

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, 45388 + ... + 67971.

It is an arithmetic number, because the mean of its divisors is an integer number (124582640).

Almost surely, 2^1280049828 is an apocalyptic number.

It is an amenable number.

1280049828 is an abundant number, since it is smaller than the sum of its proper divisors (1709933532).

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

1280049828 is a wasteful number, since it uses less digits than its factorization.

1280049828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114307 (or 114305 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 1280049828 is about 35777.7840006896. The cubic root of 1280049828 is about 1085.7811354136.

The spelling of 1280049828 in words is "one billion, two hundred eighty million, forty-nine thousand, eight hundred twenty-eight".