228544437 has 24 divisors (see below), whose sum is σ = 339982048. Its totient is φ = 136429920.

The previous prime is 228544423. The next prime is 228544453. The reversal of 228544437 is 734445822.

It is a happy number.

It is not a de Polignac number, because 228544437 - 2⁸ = 228544181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228544395 and 228544404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228544417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19623 + ... + 29019.

Almost surely, 2^228544437 is an apocalyptic number.

It is an amenable number.

228544437 is a deficient number, since it is larger than the sum of its proper divisors (111437611).

228544437 is a wasteful number, since it uses less digits than its factorization.

228544437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9478 counting only the distinct ones).

The product of its digits is 215040, while the sum is 39.

The square root of 228544437 is about 15117.6862316956. The cubic root of 228544437 is about 611.3973493154.

The spelling of 228544437 in words is "two hundred twenty-eight million, five hundred forty-four thousand, four hundred thirty-seven".