28164593 has 8 divisors (see below), whose sum is σ = 29697600. Its totient is φ = 26636688.

The previous prime is 28164583. The next prime is 28164599. The reversal of 28164593 is 39546182.

It is a happy number.

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-28164593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28164599) 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, 16655 + ... + 18267.

It is an arithmetic number, because the mean of its divisors is an integer number (3712200).

Almost surely, 2^28164593 is an apocalyptic number.

It is an amenable number.

28164593 is a deficient number, since it is larger than the sum of its proper divisors (1533007).

28164593 is a wasteful number, since it uses less digits than its factorization.

28164593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551.

The product of its digits is 51840, while the sum is 38.

The square root of 28164593 is about 5307.0324099255. The cubic root of 28164593 is about 304.2527366441.

The spelling of 28164593 in words is "twenty-eight million, one hundred sixty-four thousand, five hundred ninety-three".