28115193 has 8 divisors (see below), whose sum is σ = 39460000. Its totient is φ = 17756928.

The previous prime is 28115183. The next prime is 28115203. The reversal of 28115193 is 39151182.

It is an interprime number because it is at equal distance from previous prime (28115183) and next prime (28115203).

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

It is a de Polignac number, because none of the positive numbers 2^k-28115193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28115193.

It is not an unprimeable number, because it can be changed into a prime (28115173) 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, 246568 + ... + 246681.

It is an arithmetic number, because the mean of its divisors is an integer number (4932500).

Almost surely, 2^28115193 is an apocalyptic number.

It is an amenable number.

28115193 is a deficient number, since it is larger than the sum of its proper divisors (11344807).

28115193 is a wasteful number, since it uses less digits than its factorization.

28115193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493271.

The product of its digits is 2160, while the sum is 30.

The square root of 28115193 is about 5302.3761654564. The cubic root of 28115193 is about 304.0747486146.

The spelling of 28115193 in words is "twenty-eight million, one hundred fifteen thousand, one hundred ninety-three".