228317280 has 96 divisors (see below), whose sum is σ = 724889088. Its totient is φ = 60403200.

The previous prime is 228317249. The next prime is 228317359. The reversal of 228317280 is 82713822.

228317280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent 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, 61065 + ... + 64695.

It is an arithmetic number, because the mean of its divisors is an integer number (7550928).

Almost surely, 2^228317280 is an apocalyptic number.

228317280 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 228317280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362444544).

228317280 is an abundant number, since it is smaller than the sum of its proper divisors (496571808).

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

228317280 is a wasteful number, since it uses less digits than its factorization.

228317280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 228317280 is about 15110.1714086902. The cubic root of 228317280 is about 611.1947202654.

The spelling of 228317280 in words is "two hundred twenty-eight million, three hundred seventeen thousand, two hundred eighty".