228839815 has 4 divisors (see below), whose sum is σ = 274607784. Its totient is φ = 183071848.

The previous prime is 228839813. The next prime is 228839827. The reversal of 228839815 is 518938822.

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 228839815 - 2¹ = 228839813 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 (228839813) 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, 22883977 + ... + 22883986.

It is an arithmetic number, because the mean of its divisors is an integer number (68651946).

Almost surely, 2^228839815 is an apocalyptic number.

228839815 is a deficient number, since it is larger than the sum of its proper divisors (45767969).

228839815 is an equidigital number, since it uses as much as digits as its factorization.

228839815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45767968.

The product of its digits is 276480, while the sum is 46.

The square root of 228839815 is about 15127.4523631707. The cubic root of 228839815 is about 611.6606322943.

The spelling of 228839815 in words is "two hundred twenty-eight million, eight hundred thirty-nine thousand, eight hundred fifteen".