28656386 has 8 divisors (see below), whose sum is σ = 46892304. Its totient is φ = 13025620.

The previous prime is 28656349. The next prime is 28656391. The reversal of 28656386 is 68365682.

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

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, 651260 + ... + 651303.

It is an arithmetic number, because the mean of its divisors is an integer number (5861538).

Almost surely, 2^28656386 is an apocalyptic number.

28656386 is a deficient number, since it is larger than the sum of its proper divisors (18235918).

28656386 is a wasteful number, since it uses less digits than its factorization.

28656386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302576.

The product of its digits is 414720, while the sum is 44.

The square root of 28656386 is about 5353.1659791193. The cubic root of 28656386 is about 306.0134201755.

The spelling of 28656386 in words is "twenty-eight million, six hundred fifty-six thousand, three hundred eighty-six".