228534280 has 64 divisors (see below), whose sum is σ = 582926400. Its totient is φ = 79937280.

The previous prime is 228534269. The next prime is 228534329. The reversal of 228534280 is 82435822.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1686 + ... + 21445.

It is an arithmetic number, because the mean of its divisors is an integer number (9108225).

Almost surely, 2^228534280 is an apocalyptic number.

228534280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228534280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291463200).

228534280 is an abundant number, since it is smaller than the sum of its proper divisors (354392120).

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

228534280 is a wasteful number, since it uses less digits than its factorization.

228534280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23174 (or 23170 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 228534280 is about 15117.3502969270. The cubic root of 228534280 is about 611.3882919158.

The spelling of 228534280 in words is "two hundred twenty-eight million, five hundred thirty-four thousand, two hundred eighty".