228798018 has 12 divisors (see below), whose sum is σ = 495729078. Its totient is φ = 76266000.

The previous prime is 228798001. The next prime is 228798079. The reversal of 228798018 is 810897822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 136118889 + 92679129 = 11667^2 + 9627^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6355483 + ... + 6355518.

Almost surely, 2^228798018 is an apocalyptic number.

228798018 is an abundant number, since it is smaller than the sum of its proper divisors (266931060).

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

228798018 is a wasteful number, since it uses less digits than its factorization.

228798018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12711009 (or 12711006 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 228798018 is about 15126.0708050703. The cubic root of 228798018 is about 611.6233906164.

The spelling of 228798018 in words is "two hundred twenty-eight million, seven hundred ninety-eight thousand, eighteen".