28033049 has 4 divisors (see below), whose sum is σ = 30581520. Its totient is φ = 25484580.

The previous prime is 28033043. The next prime is 28033063. The reversal of 28033049 is 94033082.

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 not a de Polignac number, because 28033049 - 2⁸ = 28032793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28033043) 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, 1274219 + ... + 1274240.

It is an arithmetic number, because the mean of its divisors is an integer number (7645380).

Almost surely, 2^28033049 is an apocalyptic number.

It is an amenable number.

28033049 is a deficient number, since it is larger than the sum of its proper divisors (2548471).

28033049 is a wasteful number, since it uses less digits than its factorization.

28033049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548470.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 28033049 is about 5294.6245381519. The cubic root of 28033049 is about 303.7783219145.

The spelling of 28033049 in words is "twenty-eight million, thirty-three thousand, forty-nine".