228771956 has 24 divisors (see below), whose sum is σ = 466179840. Its totient is φ = 96194592.

The previous prime is 228771947. The next prime is 228771979. The reversal of 228771956 is 659177822.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 228771956.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 75596 + ... + 78563.

It is an arithmetic number, because the mean of its divisors is an integer number (19424160).

Almost surely, 2^228771956 is an apocalyptic number.

It is an amenable number.

228771956 is an abundant number, since it is smaller than the sum of its proper divisors (237407884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228771956 is a wasteful number, since it uses less digits than its factorization.

228771956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154223 (or 154221 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 228771956 is about 15125.2092878082. The cubic root of 228771956 is about 611.6001667350.

The spelling of 228771956 in words is "two hundred twenty-eight million, seven hundred seventy-one thousand, nine hundred fifty-six".