228333539 has 4 divisors (see below), whose sum is σ = 260952624. Its totient is φ = 195714456.

The previous prime is 228333517. The next prime is 228333541. The reversal of 228333539 is 935333822.

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

It is not a de Polignac number, because 228333539 - 2⁸ = 228333283 is a prime.

It is a super-3 number, since 3×228333539³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228330539) 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, 16309532 + ... + 16309545.

It is an arithmetic number, because the mean of its divisors is an integer number (65238156).

Almost surely, 2^228333539 is an apocalyptic number.

228333539 is a deficient number, since it is larger than the sum of its proper divisors (32619085).

228333539 is an equidigital number, since it uses as much as digits as its factorization.

228333539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32619084.

The product of its digits is 116640, while the sum is 38.

The square root of 228333539 is about 15110.7094141870. The cubic root of 228333539 is about 611.2092281162.

The spelling of 228333539 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, five hundred thirty-nine".