28194133 has 8 divisors (see below), whose sum is σ = 31179456. Its totient is φ = 25279200.

The previous prime is 28194079. The next prime is 28194137. The reversal of 28194133 is 33149182.

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-28194133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28194095 and 28194104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28194137) 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, 16753 + ... + 18358.

It is an arithmetic number, because the mean of its divisors is an integer number (3897432).

Almost surely, 2^28194133 is an apocalyptic number.

It is an amenable number.

28194133 is a deficient number, since it is larger than the sum of its proper divisors (2985323).

28194133 is a wasteful number, since it uses less digits than its factorization.

28194133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35195.

The product of its digits is 5184, while the sum is 31.

The square root of 28194133 is about 5309.8147801971. The cubic root of 28194133 is about 304.3590697446.

The spelling of 28194133 in words is "twenty-eight million, one hundred ninety-four thousand, one hundred thirty-three".