228144732 has 24 divisors (see below), whose sum is σ = 539078400. Its totient is φ = 75085296.

The previous prime is 228144727. The next prime is 228144767. The reversal of 228144732 is 237441822.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 228144693 and 228144702.

It is a congruent number.

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, 119382 + ... + 121277.

It is an arithmetic number, because the mean of its divisors is an integer number (22461600).

Almost surely, 2^228144732 is an apocalyptic number.

It is an amenable number.

228144732 is an abundant number, since it is smaller than the sum of its proper divisors (310933668).

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

228144732 is a wasteful number, since it uses less digits than its factorization.

228144732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240745 (or 240743 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 228144732 is about 15104.4606656444. The cubic root of 228144732 is about 611.0407138107.

The spelling of 228144732 in words is "two hundred twenty-eight million, one hundred forty-four thousand, seven hundred thirty-two".