228839437 has 4 divisors (see below), whose sum is σ = 231105276. Its totient is φ = 226573600.

The previous prime is 228839419. The next prime is 228839441. The reversal of 228839437 is 734938822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224370441 + 4468996 = 14979^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 228839437 - 2⁷ = 228839309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228839407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132768 + ... + 1132969.

It is an arithmetic number, because the mean of its divisors is an integer number (57776319).

Almost surely, 2^228839437 is an apocalyptic number.

It is an amenable number.

228839437 is a deficient number, since it is larger than the sum of its proper divisors (2265839).

228839437 is a wasteful number, since it uses less digits than its factorization.

228839437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265838.

The product of its digits is 580608, while the sum is 46.

The square root of 228839437 is about 15127.4398693236. The cubic root of 228839437 is about 611.6602955117.

The spelling of 228839437 in words is "two hundred twenty-eight million, eight hundred thirty-nine thousand, four hundred thirty-seven".