28385206 has 8 divisors (see below), whose sum is σ = 45082440. Its totient is φ = 13357728.

The previous prime is 28385177. The next prime is 28385209. The reversal of 28385206 is 60258382.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 834859 = 28385206 / (2 + 8 + 3 + 8 + 5 + 2 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417396 + ... + 417463.

It is an arithmetic number, because the mean of its divisors is an integer number (5635305).

Almost surely, 2^28385206 is an apocalyptic number.

28385206 is a deficient number, since it is larger than the sum of its proper divisors (16697234).

28385206 is a wasteful number, since it uses less digits than its factorization.

28385206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834878.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28385206 is about 5327.7768346657. The cubic root of 28385206 is about 305.0450744097.

The spelling of 28385206 in words is "twenty-eight million, three hundred eighty-five thousand, two hundred six".