28886549 has 4 divisors (see below), whose sum is σ = 28932960. Its totient is φ = 28840140.

The previous prime is 28886527. The next prime is 28886567. The reversal of 28886549 is 94568882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28886549 - 2²⁰ = 27837973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28886497 and 28886506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886569) 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, 22259 + ... + 23520.

It is an arithmetic number, because the mean of its divisors is an integer number (7233240).

Almost surely, 2^28886549 is an apocalyptic number.

It is an amenable number.

28886549 is a deficient number, since it is larger than the sum of its proper divisors (46411).

28886549 is an equidigital number, since it uses as much as digits as its factorization.

28886549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46410.

The product of its digits is 1105920, while the sum is 50.

The square root of 28886549 is about 5374.6208238349. The cubic root of 28886549 is about 306.8305182726.

The spelling of 28886549 in words is "twenty-eight million, eight hundred eighty-six thousand, five hundred forty-nine".