28202193 has 12 divisors (see below), whose sum is σ = 40863888. Its totient is φ = 18742680.

The previous prime is 28202189. The next prime is 28202203. The reversal of 28202193 is 39120282.

It is a happy number.

It is not a de Polignac number, because 28202193 - 2² = 28202189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755 + ... + 7712.

It is an arithmetic number, because the mean of its divisors is an integer number (3405324).

Almost surely, 2^28202193 is an apocalyptic number.

It is an amenable number.

28202193 is a deficient number, since it is larger than the sum of its proper divisors (12661695).

28202193 is a wasteful number, since it uses less digits than its factorization.

28202193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9804 (or 9801 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28202193 is about 5310.5736978221. The cubic root of 28202193 is about 304.3880698724.

The spelling of 28202193 in words is "twenty-eight million, two hundred two thousand, one hundred ninety-three".