228145232 has 40 divisors (see below), whose sum is σ = 508318656. Its totient is φ = 97168896.

The previous prime is 228145193. The next prime is 228145259. The reversal of 228145232 is 232541822.

It is a junction number, because it is equal to n+sod(n) for n = 228145195 and 228145204.

It is a congruent number.

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, 12008 + ... + 24504.

Almost surely, 2^228145232 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 228145232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254159328).

228145232 is an abundant number, since it is smaller than the sum of its proper divisors (280173424).

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

228145232 is a wasteful number, since it uses less digits than its factorization.

228145232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12675 (or 12669 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 228145232 is about 15104.4772170373. The cubic root of 228145232 is about 611.0411601942.

The spelling of 228145232 in words is "two hundred twenty-eight million, one hundred forty-five thousand, two hundred thirty-two".