228706384 has 20 divisors (see below), whose sum is σ = 443765620. Its totient is φ = 114186240.

The previous prime is 228706381. The next prime is 228706391. The reversal of 228706384 is 483607822.

It can be written as a sum of positive squares in 2 ways, for example, as 85377600 + 143328784 = 9240^2 + 11972^2 .

It is a super-2 number, since 2×228706384² = 104613220164710912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228706381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264 + ... + 21424.

It is an arithmetic number, because the mean of its divisors is an integer number (22188281).

Almost surely, 2^228706384 is an apocalyptic number.

It is an amenable number.

228706384 is a deficient number, since it is larger than the sum of its proper divisors (215059236).

228706384 is a wasteful number, since it uses less digits than its factorization.

228706384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20878 (or 20872 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 228706384 is about 15123.0414930331. The cubic root of 228706384 is about 611.5417276398.

The spelling of 228706384 in words is "two hundred twenty-eight million, seven hundred six thousand, three hundred eighty-four".