228672786 has 8 divisors (see below), whose sum is σ = 457345584. Its totient is φ = 76224260.

The previous prime is 228672767. The next prime is 228672791. The reversal of 228672786 is 687276822.

It is a happy number.

228672786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

228672786 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19056060 + ... + 19056071.

It is an arithmetic number, because the mean of its divisors is an integer number (57168198).

Almost surely, 2^228672786 is an apocalyptic number.

228672786 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.

228672786 is a wasteful number, since it uses less digits than its factorization.

228672786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38112136.

The product of its digits is 903168, while the sum is 48.

The square root of 228672786 is about 15121.9306307098. The cubic root of 228672786 is about 611.5117800933.

The spelling of 228672786 in words is "two hundred twenty-eight million, six hundred seventy-two thousand, seven hundred eighty-six".