28277255089 has 4 divisors (see below), whose sum is σ = 29189424640. Its totient is φ = 27365085540.

The previous prime is 28277255059. The next prime is 28277255101. The reversal of 28277255089 is 98055277282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28277255089 - 2⁵ = 28277255057 is a prime.

It is a super-3 number, since 3×28277255089³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28277255059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456084729 + ... + 456084790.

It is an arithmetic number, because the mean of its divisors is an integer number (7297356160).

Almost surely, 2^28277255089 is an apocalyptic number.

It is an amenable number.

28277255089 is a deficient number, since it is larger than the sum of its proper divisors (912169551).

28277255089 is an equidigital number, since it uses as much as digits as its factorization.

28277255089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912169550.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 28277255089 in words is "twenty-eight billion, two hundred seventy-seven million, two hundred fifty-five thousand, eighty-nine".