228521260 has 48 divisors (see below), whose sum is σ = 527708160. Its totient is φ = 82434240.

The previous prime is 228521231. The next prime is 228521263. The reversal of 228521260 is 62125822.

It is not an unprimeable number, because it can be changed into a prime (228521263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23851 + ... + 32029.

It is an arithmetic number, because the mean of its divisors is an integer number (10993920).

Almost surely, 2^228521260 is an apocalyptic number.

228521260 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 228521260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263854080).

228521260 is an abundant number, since it is smaller than the sum of its proper divisors (299186900).

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

228521260 is a wasteful number, since it uses less digits than its factorization.

228521260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8326 (or 8324 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 228521260 is about 15116.9196597720. The cubic root of 228521260 is about 611.3766810731.

The spelling of 228521260 in words is "two hundred twenty-eight million, five hundred twenty-one thousand, two hundred sixty".