228191152 has 40 divisors (see below), whose sum is σ = 508244256. Its totient is φ = 97222656.

The previous prime is 228191149. The next prime is 228191209. The reversal of 228191152 is 251191822.

228191152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13488 + ... + 25264.

Almost surely, 2^228191152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228191152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254122128).

228191152 is an abundant number, since it is smaller than the sum of its proper divisors (280053104).

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

228191152 is a wasteful number, since it uses less digits than its factorization.

228191152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965 (or 11959 counting only the distinct ones).

The product of its digits is 2880, while the sum is 31.

The square root of 228191152 is about 15105.9972196476. The cubic root of 228191152 is about 611.0821532749.

The spelling of 228191152 in words is "two hundred twenty-eight million, one hundred ninety-one thousand, one hundred fifty-two".