228032380 has 24 divisors (see below), whose sum is σ = 479167920. Its totient is φ = 91155840.

The previous prime is 228032359. The next prime is 228032381. The reversal of 228032380 is 83230822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228032381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45856 + ... + 50584.

It is an arithmetic number, because the mean of its divisors is an integer number (19965330).

Almost surely, 2^228032380 is an apocalyptic number.

228032380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228032380 is an abundant number, since it is smaller than the sum of its proper divisors (251135540).

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

228032380 is a wasteful number, since it uses less digits than its factorization.

228032380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7149 (or 7147 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 228032380 is about 15100.7410414191. The cubic root of 228032380 is about 610.9403931091.

The spelling of 228032380 in words is "two hundred twenty-eight million, thirty-two thousand, three hundred eighty".