28886149 has 4 divisors (see below), whose sum is σ = 29077600. Its totient is φ = 28694700.

The previous prime is 28886147. The next prime is 28886171. The reversal of 28886149 is 94168882.

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 28886149 - 2¹ = 28886147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28886099 and 28886108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95499 + ... + 95800.

It is an arithmetic number, because the mean of its divisors is an integer number (7269400).

Almost surely, 2^28886149 is an apocalyptic number.

It is an amenable number.

28886149 is a deficient number, since it is larger than the sum of its proper divisors (191451).

28886149 is a wasteful number, since it uses less digits than its factorization.

28886149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191450.

The product of its digits is 221184, while the sum is 46.

The square root of 28886149 is about 5374.5836117787. The cubic root of 28886149 is about 306.8291020105.

The spelling of 28886149 in words is "twenty-eight million, eight hundred eighty-six thousand, one hundred forty-nine".