228143888 has 40 divisors (see below), whose sum is σ = 506152128. Its totient is φ = 97587072.

The previous prime is 228143879. The next prime is 228143891. The reversal of 228143888 is 888341822.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66995 + ... + 70317.

Almost surely, 2^228143888 is an apocalyptic number.

228143888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228143888 is an abundant number, since it is smaller than the sum of its proper divisors (278008240).

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

228143888 is a wasteful number, since it uses less digits than its factorization.

228143888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951 (or 3945 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 228143888 is about 15104.4327268521. The cubic root of 228143888 is about 611.0399603138.

The spelling of 228143888 in words is "two hundred twenty-eight million, one hundred forty-three thousand, eight hundred eighty-eight".