28195433 has 6 divisors (see below), whose sum is σ = 32798826. Its totient is φ = 24167472.

The previous prime is 28195423. The next prime is 28195439. The reversal of 28195433 is 33459182.

It can be written as a sum of positive squares in only one way, i.e., 19386409 + 8809024 = 4403^2 + 2968^2 .

It is not a de Polignac number, because 28195433 - 2¹² = 28191337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28195393 and 28195402.

It is not an unprimeable number, because it can be changed into a prime (28195439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287660 + ... + 287757.

It is an arithmetic number, because the mean of its divisors is an integer number (5466471).

Almost surely, 2^28195433 is an apocalyptic number.

It is an amenable number.

28195433 is a deficient number, since it is larger than the sum of its proper divisors (4603393).

28195433 is an equidigital number, since it uses as much as digits as its factorization.

28195433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575431 (or 575424 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 28195433 is about 5309.9371936022. The cubic root of 28195433 is about 304.3637475584.

The spelling of 28195433 in words is "twenty-eight million, one hundred ninety-five thousand, four hundred thirty-three".