280728874295 has 4 divisors (see below), whose sum is σ = 336874649160. Its totient is φ = 224583099432.

The previous prime is 280728874291. The next prime is 280728874337. The reversal of 280728874295 is 592478827082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280728874295 - 2² = 280728874291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280728874291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28072887425 + ... + 28072887434.

It is an arithmetic number, because the mean of its divisors is an integer number (84218662290).

Almost surely, 2^280728874295 is an apocalyptic number.

280728874295 is a deficient number, since it is larger than the sum of its proper divisors (56145774865).

280728874295 is an equidigital number, since it uses as much as digits as its factorization.

280728874295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56145774864.

The product of its (nonzero) digits is 36126720, while the sum is 62.

The spelling of 280728874295 in words is "two hundred eighty billion, seven hundred twenty-eight million, eight hundred seventy-four thousand, two hundred ninety-five".