228555760 has 40 divisors (see below), whose sum is σ = 539336016. Its totient is φ = 90055680.

The previous prime is 228555751. The next prime is 228555781. The reversal of 228555760 is 67555822.

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

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15961 + ... + 26680.

Almost surely, 2^228555760 is an apocalyptic number.

228555760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228555760 is an abundant number, since it is smaller than the sum of its proper divisors (310780256).

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

228555760 is a wasteful number, since it uses less digits than its factorization.

228555760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42721 (or 42715 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 228555760 is about 15118.0607221958. The cubic root of 228555760 is about 611.4074461671.

The spelling of 228555760 in words is "two hundred twenty-eight million, five hundred fifty-five thousand, seven hundred sixty".