228323989 has 8 divisors (see below), whose sum is σ = 236388960. Its totient is φ = 220271856.

The previous prime is 228323917. The next prime is 228323993. The reversal of 228323989 is 989323822.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228323989 - 2²³ = 219935381 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 (228323089) 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 7 ways as a sum of consecutive naturals, for example, 45982 + ... + 50704.

It is an arithmetic number, because the mean of its divisors is an integer number (29548620).

Almost surely, 2^228323989 is an apocalyptic number.

228323989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

228323989 is a deficient number, since it is larger than the sum of its proper divisors (8064971).

228323989 is a wasteful number, since it uses less digits than its factorization.

228323989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419.

The product of its digits is 373248, while the sum is 46.

The square root of 228323989 is about 15110.3934098355. The cubic root of 228323989 is about 611.2007067669.

The spelling of 228323989 in words is "two hundred twenty-eight million, three hundred twenty-three thousand, nine hundred eighty-nine".