228943636 has 12 divisors (see below), whose sum is σ = 400763412. Its totient is φ = 114439808.

The previous prime is 228943621. The next prime is 228943639. The reversal of 228943636 is 636349822.

228943636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 225180036 + 3763600 = 15006^2 + 1940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 228943592 and 228943601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228943639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16266 + ... + 26878.

It is an arithmetic number, because the mean of its divisors is an integer number (33396951).

Almost surely, 2^228943636 is an apocalyptic number.

It is an amenable number.

228943636 is a deficient number, since it is larger than the sum of its proper divisors (171819776).

228943636 is a wasteful number, since it uses less digits than its factorization.

228943636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16010 (or 16008 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 228943636 is about 15130.8835168340. The cubic root of 228943636 is about 611.7531185566.

The spelling of 228943636 in words is "two hundred twenty-eight million, nine hundred forty-three thousand, six hundred thirty-six".