28390876355 has 4 divisors (see below), whose sum is σ = 34069051632. Its totient is φ = 22712701080.

The previous prime is 28390876337. The next prime is 28390876361. The reversal of 28390876355 is 55367809382.

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

It is not a de Polignac number, because 28390876355 - 2¹⁸ = 28390614211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28390876355.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2839087631 + ... + 2839087640.

It is an arithmetic number, because the mean of its divisors is an integer number (8517262908).

Almost surely, 2^28390876355 is an apocalyptic number.

28390876355 is a deficient number, since it is larger than the sum of its proper divisors (5678175277).

28390876355 is an equidigital number, since it uses as much as digits as its factorization.

28390876355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678175276.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 28390876355 in words is "twenty-eight billion, three hundred ninety million, eight hundred seventy-six thousand, three hundred fifty-five".