228381332 has 12 divisors (see below), whose sum is σ = 423177300. Its totient is φ = 107473536.

The previous prime is 228381317. The next prime is 228381347. The reversal of 228381332 is 233183822.

228381332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228381317) and next prime (228381347).

It can be written as a sum of positive squares in 2 ways, for example, as 183169156 + 45212176 = 13534^2 + 6724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679207 + ... + 1679342.

It is an arithmetic number, because the mean of its divisors is an integer number (35264775).

Almost surely, 2^228381332 is an apocalyptic number.

It is an amenable number.

228381332 is a deficient number, since it is larger than the sum of its proper divisors (194795968).

228381332 is a wasteful number, since it uses less digits than its factorization.

228381332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358570 (or 3358568 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 228381332 is about 15112.2907595109. The cubic root of 228381332 is about 611.2518696614.

The spelling of 228381332 in words is "two hundred twenty-eight million, three hundred eighty-one thousand, three hundred thirty-two".