228126239 has 4 divisors (see below), whose sum is σ = 248865000. Its totient is φ = 207387480.

The previous prime is 228126221. The next prime is 228126251. The reversal of 228126239 is 932621822.

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 228126239 - 2²⁰ = 227077663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228126199 and 228126208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228126289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10369364 + ... + 10369385.

It is an arithmetic number, because the mean of its divisors is an integer number (62216250).

Almost surely, 2^228126239 is an apocalyptic number.

228126239 is a deficient number, since it is larger than the sum of its proper divisors (20738761).

228126239 is a wasteful number, since it uses less digits than its factorization.

228126239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738760.

The product of its digits is 20736, while the sum is 35.

The square root of 228126239 is about 15103.8484830854. The cubic root of 228126239 is about 611.0242034123.

The spelling of 228126239 in words is "two hundred twenty-eight million, one hundred twenty-six thousand, two hundred thirty-nine".