28677311 has 4 divisors (see below), whose sum is σ = 30883272. Its totient is φ = 26471352.

The previous prime is 28677307. The next prime is 28677349. The reversal of 28677311 is 11377682.

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 28677311 - 2² = 28677307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28677211) 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, 1102961 + ... + 1102986.

It is an arithmetic number, because the mean of its divisors is an integer number (7720818).

Almost surely, 2^28677311 is an apocalyptic number.

28677311 is a deficient number, since it is larger than the sum of its proper divisors (2205961).

28677311 is a wasteful number, since it uses less digits than its factorization.

28677311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205960.

The product of its digits is 14112, while the sum is 35.

The square root of 28677311 is about 5355.1200733504. The cubic root of 28677311 is about 306.0878861005.

The spelling of 28677311 in words is "twenty-eight million, six hundred seventy-seven thousand, three hundred eleven".