28344933 has 24 divisors (see below), whose sum is σ = 43594200. Its totient is φ = 17685504.

The previous prime is 28344929. The next prime is 28344949. The reversal of 28344933 is 33944382.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20493729 + 7851204 = 4527^2 + 2802^2 .

It is not a de Polignac number, because 28344933 - 2² = 28344929 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28344133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34633 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (1816425).

Almost surely, 2^28344933 is an apocalyptic number.

It is an amenable number.

28344933 is a deficient number, since it is larger than the sum of its proper divisors (15249267).

28344933 is a wasteful number, since it uses less digits than its factorization.

28344933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1058 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 28344933 is about 5323.9959616814. The cubic root of 28344933 is about 304.9007398939.

The spelling of 28344933 in words is "twenty-eight million, three hundred forty-four thousand, nine hundred thirty-three".