228065144 has 16 divisors (see below), whose sum is σ = 429774000. Its totient is φ = 113458752.

The previous prime is 228065111. The next prime is 228065207. The reversal of 228065144 is 441560822.

It is a self number, because there is not a number n which added to its sum of digits gives 228065144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70037 + ... + 73220.

It is an arithmetic number, because the mean of its divisors is an integer number (26860875).

Almost surely, 2^228065144 is an apocalyptic number.

It is an amenable number.

228065144 is a deficient number, since it is larger than the sum of its proper divisors (201708856).

228065144 is a wasteful number, since it uses less digits than its factorization.

228065144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143462 (or 143458 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 228065144 is about 15101.8258498766. The cubic root of 228065144 is about 610.9696519544.

The spelling of 228065144 in words is "two hundred twenty-eight million, sixty-five thousand, one hundred forty-four".