28199361 has 8 divisors (see below), whose sum is σ = 37629280. Its totient is φ = 18784512.

The previous prime is 28199341. The next prime is 28199377. The reversal of 28199361 is 16399182.

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

It is not a de Polignac number, because 28199361 - 2⁵ = 28199329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28199341) 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, 1761 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (4703660).

Almost surely, 2^28199361 is an apocalyptic number.

It is an amenable number.

28199361 is a deficient number, since it is larger than the sum of its proper divisors (9429919).

28199361 is a wasteful number, since it uses less digits than its factorization.

28199361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535.

The product of its digits is 23328, while the sum is 39.

The square root of 28199361 is about 5310.3070532691. The cubic root of 28199361 is about 304.3778808790.

The spelling of 28199361 in words is "twenty-eight million, one hundred ninety-nine thousand, three hundred sixty-one".