228673538 has 4 divisors (see below), whose sum is σ = 343010310. Its totient is φ = 114336768.

The previous prime is 228673519. The next prime is 228673553. The reversal of 228673538 is 835376822.

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

It can be written as a sum of positive squares in only one way, i.e., 167003929 + 61669609 = 12923^2 + 7853^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57168383 + ... + 57168386.

Almost surely, 2^228673538 is an apocalyptic number.

228673538 is a deficient number, since it is larger than the sum of its proper divisors (114336772).

228673538 is a wasteful number, since it uses less digits than its factorization.

228673538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114336771.

The product of its digits is 483840, while the sum is 44.

The square root of 228673538 is about 15121.9554952394. The cubic root of 228673538 is about 611.5124504199.

The spelling of 228673538 in words is "two hundred twenty-eight million, six hundred seventy-three thousand, five hundred thirty-eight".