228137444 has 12 divisors (see below), whose sum is σ = 401885568. Its totient is φ = 113313000.

The previous prime is 228137443. The next prime is 228137521. The reversal of 228137444 is 444731822.

228137444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (228137443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188252 + ... + 189459.

It is an arithmetic number, because the mean of its divisors is an integer number (33490464).

Almost surely, 2^228137444 is an apocalyptic number.

It is an amenable number.

228137444 is a deficient number, since it is larger than the sum of its proper divisors (173748124).

228137444 is a wasteful number, since it uses less digits than its factorization.

228137444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377866 (or 377864 counting only the distinct ones).

The product of its digits is 43008, while the sum is 35.

The square root of 228137444 is about 15104.2194104826. The cubic root of 228137444 is about 611.0342072507.

The spelling of 228137444 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, four hundred forty-four".