280555250028 has 24 divisors (see below), whose sum is σ = 654711991920. Its totient is φ = 93506548800.

The previous prime is 280555249993. The next prime is 280555250077. The reversal of 280555250028 is 820052555082.

It is a super-2 number, since 2×280555250028² (a number of 24 digits) contains 22 as substring.

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, 1384723 + ... + 1574346.

It is an arithmetic number, because the mean of its divisors is an integer number (27279666330).

Almost surely, 2^280555250028 is an apocalyptic number.

It is an amenable number.

280555250028 is an abundant number, since it is smaller than the sum of its proper divisors (374156741892).

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

280555250028 is a wasteful number, since it uses less digits than its factorization.

280555250028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966977 (or 2966975 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 42.

The spelling of 280555250028 in words is "two hundred eighty billion, five hundred fifty-five million, two hundred fifty thousand, twenty-eight".