228139176 has 32 divisors (see below), whose sum is σ = 572312160. Its totient is φ = 75784512.

The previous prime is 228139141. The next prime is 228139181. The reversal of 228139176 is 671931822.

It is a super-3 number, since 3×228139176³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 9190 + ... + 23253.

It is an arithmetic number, because the mean of its divisors is an integer number (17884755).

Almost surely, 2^228139176 is an apocalyptic number.

It is an amenable number.

228139176 is an abundant number, since it is smaller than the sum of its proper divisors (344172984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228139176 is a wasteful number, since it uses less digits than its factorization.

228139176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32745 (or 32741 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 228139176 is about 15104.2767453460. The cubic root of 228139176 is about 611.0357535533.

The spelling of 228139176 in words is "two hundred twenty-eight million, one hundred thirty-nine thousand, one hundred seventy-six".