228940186 has 8 divisors (see below), whose sum is σ = 343585620. Its totient is φ = 114411648.

The previous prime is 228940171. The next prime is 228940189. The reversal of 228940186 is 681049822.

228940186 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 193905625 + 35034561 = 13925^2 + 5919^2 .

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

It is not an unprimeable number, because it can be changed into a prime (228940189) 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, 24151 + ... + 32266.

Almost surely, 2^228940186 is an apocalyptic number.

228940186 is a deficient number, since it is larger than the sum of its proper divisors (114645434).

228940186 is a wasteful number, since it uses less digits than its factorization.

228940186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58448.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 228940186 is about 15130.7695111650. The cubic root of 228940186 is about 611.7500456622.

The spelling of 228940186 in words is "two hundred twenty-eight million, nine hundred forty thousand, one hundred eighty-six".