228781158 has 8 divisors (see below), whose sum is σ = 457562328. Its totient is φ = 76260384.

The previous prime is 228781097. The next prime is 228781169. The reversal of 228781158 is 851187822.

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

228781158 is an admirable number.

It is a congruent number.

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, 19065091 + ... + 19065102.

It is an arithmetic number, because the mean of its divisors is an integer number (57195291).

Almost surely, 2^228781158 is an apocalyptic number.

228781158 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.

228781158 is a wasteful number, since it uses less digits than its factorization.

228781158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38130198.

The product of its digits is 71680, while the sum is 42.

The square root of 228781158 is about 15125.5134788873. The cubic root of 228781158 is about 611.6083668503.

The spelling of 228781158 in words is "two hundred twenty-eight million, seven hundred eighty-one thousand, one hundred fifty-eight".