228102839 has 4 divisors (see below), whose sum is σ = 228214224. Its totient is φ = 227991456.

The previous prime is 228102827. The next prime is 228102857. The reversal of 228102839 is 938201822.

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 228102839 - 2²⁰ = 227054263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228102799 and 228102808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228102859) 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, 52562 + ... + 56735.

It is an arithmetic number, because the mean of its divisors is an integer number (57053556).

Almost surely, 2^228102839 is an apocalyptic number.

228102839 is a deficient number, since it is larger than the sum of its proper divisors (111385).

228102839 is a wasteful number, since it uses less digits than its factorization.

228102839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111384.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 228102839 is about 15103.0738262117. The cubic root of 228102839 is about 611.0033108057.

The spelling of 228102839 in words is "two hundred twenty-eight million, one hundred two thousand, eight hundred thirty-nine".