28676843 has 4 divisors (see below), whose sum is σ = 30882768. Its totient is φ = 26470920.

The previous prime is 28676839. The next prime is 28676861. The reversal of 28676843 is 34867682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34867682 = 2 ⋅17433841.

It is a cyclic number.

It is not a de Polignac number, because 28676843 - 2² = 28676839 is a prime.

It is a super-2 number, since 2×28676843² = 1644722648893298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28676794 and 28676803.

It is not an unprimeable number, because it can be changed into a prime (28676803) 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, 1102943 + ... + 1102968.

It is an arithmetic number, because the mean of its divisors is an integer number (7720692).

Almost surely, 2^28676843 is an apocalyptic number.

28676843 is a deficient number, since it is larger than the sum of its proper divisors (2205925).

28676843 is a wasteful number, since it uses less digits than its factorization.

28676843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205924.

The product of its digits is 387072, while the sum is 44.

The square root of 28676843 is about 5355.0763766729. The cubic root of 28676843 is about 306.0862210221.

The spelling of 28676843 in words is "twenty-eight million, six hundred seventy-six thousand, eight hundred forty-three".