228891712 has 28 divisors (see below), whose sum is σ = 519094720. Its totient is φ = 98096256.

The previous prime is 228891697. The next prime is 228891721. The reversal of 228891712 is 217198822.

It is a tau number, because it is divible by the number of its divisors (28).

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, 255012 + ... + 255907.

Almost surely, 2^228891712 is an apocalyptic number.

It is an amenable number.

228891712 is an abundant number, since it is smaller than the sum of its proper divisors (290203008).

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

228891712 is an equidigital number, since it uses as much as digits as its factorization.

228891712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510938 (or 510928 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The square root of 228891712 is about 15129.1675911135. The cubic root of 228891712 is about 611.7068668952.

The spelling of 228891712 in words is "two hundred twenty-eight million, eight hundred ninety-one thousand, seven hundred twelve".