228789791 has 8 divisors (see below), whose sum is σ = 245864880. Its totient is φ = 212116608.

The previous prime is 228789739. The next prime is 228789829. The reversal of 228789791 is 197987822.

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 228789791 - 2¹⁴ = 228773407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228789721) 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, 99296 + ... + 101573.

It is an arithmetic number, because the mean of its divisors is an integer number (30733110).

Almost surely, 2^228789791 is an apocalyptic number.

228789791 is a deficient number, since it is larger than the sum of its proper divisors (17075089).

228789791 is a wasteful number, since it uses less digits than its factorization.

228789791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200953.

The product of its digits is 1016064, while the sum is 53.

The square root of 228789791 is about 15125.7988549366. The cubic root of 228789791 is about 611.6160597167.

The spelling of 228789791 in words is "two hundred twenty-eight million, seven hundred eighty-nine thousand, seven hundred ninety-one".