28650386 has 8 divisors (see below), whose sum is σ = 44361984. Its totient is φ = 13863060.

The previous prime is 28650361. The next prime is 28650397. The reversal of 28650386 is 68305682.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230990 + ... + 231113.

It is an arithmetic number, because the mean of its divisors is an integer number (5545248).

Almost surely, 2^28650386 is an apocalyptic number.

28650386 is a deficient number, since it is larger than the sum of its proper divisors (15711598).

28650386 is a wasteful number, since it uses less digits than its factorization.

28650386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462136.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28650386 is about 5352.6055337564. The cubic root of 28650386 is about 305.9920612519.

It can be divided in two parts, 286 and 50386, that multiplied together give a triangular number (14410396 = T₅₃₆₈).

The spelling of 28650386 in words is "twenty-eight million, six hundred fifty thousand, three hundred eighty-six".