228520260 has 72 divisors (see below), whose sum is σ = 694413720. Its totient is φ = 60830208.

The previous prime is 228520241. The next prime is 228520321. The reversal of 228520260 is 62025822.

It can be written as a sum of positive squares in 4 ways, for example, as 152621316 + 75898944 = 12354^2 + 8712^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185326 + ... + 186554.

It is an arithmetic number, because the mean of its divisors is an integer number (9644635).

Almost surely, 2^228520260 is an apocalyptic number.

228520260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228520260 is an abundant number, since it is smaller than the sum of its proper divisors (465893460).

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

228520260 is a wasteful number, since it uses less digits than its factorization.

228520260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 228520260 is about 15116.8865842144. The cubic root of 228520260 is about 611.3757892851.

The spelling of 228520260 in words is "two hundred twenty-eight million, five hundred twenty thousand, two hundred sixty".