28047193 has 8 divisors (see below), whose sum is σ = 28563840. Its totient is φ = 27535200.

The previous prime is 28047179. The next prime is 28047197. The reversal of 28047193 is 39174082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28047193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28047197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12396 + ... + 14482.

It is an arithmetic number, because the mean of its divisors is an integer number (3570480).

Almost surely, 2^28047193 is an apocalyptic number.

It is an amenable number.

28047193 is a deficient number, since it is larger than the sum of its proper divisors (516647).

28047193 is a wasteful number, since it uses less digits than its factorization.

28047193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28047193 is about 5295.9600640488. The cubic root of 28047193 is about 303.8294035047.

The spelling of 28047193 in words is "twenty-eight million, forty-seven thousand, one hundred ninety-three".