28287334277 has 16 divisors (see below), whose sum is σ = 29658286080. Its totient is φ = 26928453552.

The previous prime is 28287334253. The next prime is 28287334301. The reversal of 28287334277 is 77243378282.

It is an interprime number because it is at equal distance from previous prime (28287334253) and next prime (28287334301).

It is a cyclic number.

It is not a de Polignac number, because 28287334277 - 2¹⁰ = 28287333253 is a prime.

It is a super-2 number, since 2×28287334277² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28287334247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4513448 + ... + 4519710.

It is an arithmetic number, because the mean of its divisors is an integer number (1853642880).

Almost surely, 2^28287334277 is an apocalyptic number.

It is an amenable number.

28287334277 is a deficient number, since it is larger than the sum of its proper divisors (1370951803).

28287334277 is a wasteful number, since it uses less digits than its factorization.

28287334277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7192.

The product of its digits is 6322176, while the sum is 53.

The spelling of 28287334277 in words is "twenty-eight billion, two hundred eighty-seven million, three hundred thirty-four thousand, two hundred seventy-seven".