28044133 has 8 divisors (see below), whose sum is σ = 31791200. Its totient is φ = 24524208.

The previous prime is 28044103. The next prime is 28044139. The reversal of 28044133 is 33144082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28044133 - 2⁹ = 28043621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28044098 and 28044107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56523 + ... + 57016.

It is an arithmetic number, because the mean of its divisors is an integer number (3973900).

Almost surely, 2^28044133 is an apocalyptic number.

It is an amenable number.

28044133 is a deficient number, since it is larger than the sum of its proper divisors (3747067).

28044133 is a wasteful number, since it uses less digits than its factorization.

28044133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113571.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28044133 is about 5295.6711567090. The cubic root of 28044133 is about 303.8183536552.

The spelling of 28044133 in words is "twenty-eight million, forty-four thousand, one hundred thirty-three".