228408912 has 60 divisors (see below), whose sum is σ = 640568500. Its totient is φ = 75976704.

The previous prime is 228408893. The next prime is 228408953. The reversal of 228408912 is 219804822.

It can be written as a sum of positive squares in 2 ways, for example, as 144576576 + 83832336 = 12024^2 + 9156^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81714 + ... + 84462.

Almost surely, 2^228408912 is an apocalyptic number.

It is an amenable number.

228408912 is an abundant number, since it is smaller than the sum of its proper divisors (412159588).

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

228408912 is a wasteful number, since it uses less digits than its factorization.

228408912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340 (or 3331 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 228408912 is about 15113.2032342584. The cubic root of 228408912 is about 611.2764741943.

The spelling of 228408912 in words is "two hundred twenty-eight million, four hundred eight thousand, nine hundred twelve".