228643789 has 8 divisors (see below), whose sum is σ = 249593760. Its totient is φ = 207721200.

The previous prime is 228643787. The next prime is 228643843. The reversal of 228643789 is 987346822.

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 228643789 - 2¹ = 228643787 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 (228643783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13182 + ... + 25120.

It is an arithmetic number, because the mean of its divisors is an integer number (31199220).

Almost surely, 2^228643789 is an apocalyptic number.

It is an amenable number.

228643789 is a deficient number, since it is larger than the sum of its proper divisors (20949971).

228643789 is a wasteful number, since it uses less digits than its factorization.

228643789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13691.

The product of its digits is 1161216, while the sum is 49.

The square root of 228643789 is about 15120.9718272339. The cubic root of 228643789 is about 611.4859312856.

The spelling of 228643789 in words is "two hundred twenty-eight million, six hundred forty-three thousand, seven hundred eighty-nine".