228267439 has 4 divisors (see below), whose sum is σ = 236138760. Its totient is φ = 220396120.

The previous prime is 228267409. The next prime is 228267443. The reversal of 228267439 is 934762822.

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 228267439 - 2⁵ = 228267407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228267395 and 228267404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228267409) 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, 3935617 + ... + 3935674.

It is an arithmetic number, because the mean of its divisors is an integer number (59034690).

Almost surely, 2^228267439 is an apocalyptic number.

228267439 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

228267439 is a deficient number, since it is larger than the sum of its proper divisors (7871321).

228267439 is an equidigital number, since it uses as much as digits as its factorization.

228267439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871320.

The product of its digits is 290304, while the sum is 43.

The square root of 228267439 is about 15108.5220653775. The cubic root of 228267439 is about 611.1502430173.

The spelling of 228267439 in words is "two hundred twenty-eight million, two hundred sixty-seven thousand, four hundred thirty-nine".