228991200 has 72 divisors (see below), whose sum is σ = 745374168. Its totient is φ = 61063680.

The previous prime is 228991183. The next prime is 228991303. The reversal of 228991200 is 2199822.

It is a happy number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 45307 + ... + 50106.

It is an arithmetic number, because the mean of its divisors is an integer number (10352419).

Almost surely, 2^228991200 is an apocalyptic number.

228991200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228991200 is an abundant number, since it is smaller than the sum of its proper divisors (516382968).

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

228991200 is a wasteful number, since it uses less digits than its factorization.

228991200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95436 (or 95423 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 228991200 is about 15132.4551874440. The cubic root of 228991200 is about 611.7954803813.

The spelling of 228991200 in words is "two hundred twenty-eight million, nine hundred ninety-one thousand, two hundred".