228140560 has 40 divisors (see below), whose sum is σ = 531323136. Its totient is φ = 91102080.

The previous prime is 228140513. The next prime is 228140573. The reversal of 228140560 is 65041822.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×228140560² = 104096230234227200, which contains 22 as substring.

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, 53217 + ... + 57343.

Almost surely, 2^228140560 is an apocalyptic number.

228140560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228140560 is an abundant number, since it is smaller than the sum of its proper divisors (303182576).

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

228140560 is a wasteful number, since it uses less digits than its factorization.

228140560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4825 counting only the distinct ones).

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

The square root of 228140560 is about 15104.3225601150. The cubic root of 228140560 is about 611.0369891613.

The spelling of 228140560 in words is "two hundred twenty-eight million, one hundred forty thousand, five hundred sixty".