228077239 has 4 divisors (see below), whose sum is σ = 245621656. Its totient is φ = 210532824.

The previous prime is 228077233. The next prime is 228077243. The reversal of 228077239 is 932770822.

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

It is a cyclic number.

It is not a de Polignac number, because 228077239 - 2⁵ = 228077207 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 (228077233) 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, 8772189 + ... + 8772214.

It is an arithmetic number, because the mean of its divisors is an integer number (61405414).

Almost surely, 2^228077239 is an apocalyptic number.

228077239 is a deficient number, since it is larger than the sum of its proper divisors (17544417).

228077239 is a wasteful number, since it uses less digits than its factorization.

228077239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544416.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 228077239 is about 15102.2262928351. The cubic root of 228077239 is about 610.9804523003.

The spelling of 228077239 in words is "two hundred twenty-eight million, seventy-seven thousand, two hundred thirty-nine".