28816062277 has 4 divisors (see below), whose sum is σ = 29026398636. Its totient is φ = 28605725920.

The previous prime is 28816062221. The next prime is 28816062281. The reversal of 28816062277 is 77226061882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77226061882 = 2 ⋅38613030941.

It can be written as a sum of positive squares in 2 ways, for example, as 5404308196 + 23411754081 = 73514^2 + 153009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28816062277 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 28816062277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816062377) 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, 105167974 + ... + 105168247.

It is an arithmetic number, because the mean of its divisors is an integer number (7256599659).

Almost surely, 2^28816062277 is an apocalyptic number.

It is an amenable number.

28816062277 is a deficient number, since it is larger than the sum of its proper divisors (210336359).

28816062277 is a wasteful number, since it uses less digits than its factorization.

28816062277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210336358.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 28816062277 in words is "twenty-eight billion, eight hundred sixteen million, sixty-two thousand, two hundred seventy-seven".