28080280755 has 48 divisors (see below), whose sum is σ = 50288299776. Its totient is φ = 14485746240.

The previous prime is 28080280729. The next prime is 28080280769. The reversal of 28080280755 is 55708208082.

It is not a de Polignac number, because 28080280755 - 2⁶ = 28080280691 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28080280755.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128860 + ... + 269750.

It is an arithmetic number, because the mean of its divisors is an integer number (1047672912).

Almost surely, 2^28080280755 is an apocalyptic number.

28080280755 is a deficient number, since it is larger than the sum of its proper divisors (22208019021).

28080280755 is a wasteful number, since it uses less digits than its factorization.

28080280755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141048 (or 141045 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 28080280755 in words is "twenty-eight billion, eighty million, two hundred eighty thousand, seven hundred fifty-five".