228891724 has 12 divisors (see below), whose sum is σ = 413482048. Its totient is φ = 110754000.

The previous prime is 228891721. The next prime is 228891737. The reversal of 228891724 is 427198822.

It is not an unprimeable number, because it can be changed into a prime (228891721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922827 + ... + 923074.

Almost surely, 2^228891724 is an apocalyptic number.

It is an amenable number.

228891724 is a deficient number, since it is larger than the sum of its proper divisors (184590324).

228891724 is a wasteful number, since it uses less digits than its factorization.

228891724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845936 (or 1845934 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 228891724 is about 15129.1679876985. The cubic root of 228891724 is about 611.7068775851.

The spelling of 228891724 in words is "two hundred twenty-eight million, eight hundred ninety-one thousand, seven hundred twenty-four".