28366386 has 8 divisors (see below), whose sum is σ = 56732784. Its totient is φ = 9455460.

The previous prime is 28366363. The next prime is 28366397. The reversal of 28366386 is 68366382.

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

28366386 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363860 + ... + 2363871.

It is an arithmetic number, because the mean of its divisors is an integer number (7091598).

Almost surely, 2^28366386 is an apocalyptic number.

28366386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28366386 is a wasteful number, since it uses less digits than its factorization.

28366386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727736.

The product of its digits is 248832, while the sum is 42.

The square root of 28366386 is about 5326.0103266892. The cubic root of 28366386 is about 304.9776423637.

The spelling of 28366386 in words is "twenty-eight million, three hundred sixty-six thousand, three hundred eighty-six".