228135956 has 12 divisors (see below), whose sum is σ = 406771092. Its totient is φ = 111915648.

The previous prime is 228135923. The next prime is 228135959. The reversal of 228135956 is 659531822.

It can be written as a sum of positive squares in 2 ways, for example, as 185885956 + 42250000 = 13634^2 + 6500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228135959) 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, 537845 + ... + 538268.

It is an arithmetic number, because the mean of its divisors is an integer number (33897591).

Almost surely, 2^228135956 is an apocalyptic number.

It is an amenable number.

228135956 is a deficient number, since it is larger than the sum of its proper divisors (178635136).

228135956 is a wasteful number, since it uses less digits than its factorization.

228135956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076170 (or 1076168 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 228135956 is about 15104.1701526433. The cubic root of 228135956 is about 611.0328787812.

The spelling of 228135956 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, nine hundred fifty-six".