228889280 has 56 divisors (see below), whose sum is σ = 546658800. Its totient is φ = 91284480.

The previous prime is 228889279. The next prime is 228889291. The reversal of 228889280 is 82988822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133871 + ... + 135569.

Almost surely, 2^228889280 is an apocalyptic number.

228889280 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 228889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273329400).

228889280 is an abundant number, since it is smaller than the sum of its proper divisors (317769520).

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

228889280 is a wasteful number, since it uses less digits than its factorization.

228889280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 228889280 is about 15129.0872163525. The cubic root of 228889280 is about 611.7047004029.

The spelling of 228889280 in words is "two hundred twenty-eight million, eight hundred eighty-nine thousand, two hundred eighty".