28827011 has 4 divisors (see below), whose sum is σ = 29151000. Its totient is φ = 28503024.

The previous prime is 28826989. The next prime is 28827041. The reversal of 28827011 is 11072882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28827011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28827041) 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, 161861 + ... + 162038.

It is an arithmetic number, because the mean of its divisors is an integer number (7287750).

Almost surely, 2^28827011 is an apocalyptic number.

28827011 is a deficient number, since it is larger than the sum of its proper divisors (323989).

28827011 is an equidigital number, since it uses as much as digits as its factorization.

28827011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323988.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 28827011 is about 5369.0791575465. The cubic root of 28827011 is about 306.6195707187.

Adding to 28827011 its reverse (11072882), we get a palindrome (39899893).

The spelling of 28827011 in words is "twenty-eight million, eight hundred twenty-seven thousand, eleven".