28118193 has 8 divisors (see below), whose sum is σ = 37647456. Its totient is φ = 18667200.

The previous prime is 28118183. The next prime is 28118219. The reversal of 28118193 is 39181182.

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

It is not a de Polignac number, because 28118193 - 2¹³ = 28110001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28118183) 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, 18723 + ... + 20168.

It is an arithmetic number, because the mean of its divisors is an integer number (4705932).

Almost surely, 2^28118193 is an apocalyptic number.

It is an amenable number.

28118193 is a deficient number, since it is larger than the sum of its proper divisors (9529263).

28118193 is a wasteful number, since it uses less digits than its factorization.

28118193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39135.

The product of its digits is 3456, while the sum is 33.

The square root of 28118193 is about 5302.6590499484. The cubic root of 28118193 is about 304.0855635478.

The spelling of 28118193 in words is "twenty-eight million, one hundred eighteen thousand, one hundred ninety-three".