228595680 has 72 divisors (see below), whose sum is σ = 780087672. Its totient is φ = 60958464.

The previous prime is 228595673. The next prime is 228595681. The reversal of 228595680 is 86595822.

228595680 is a `hidden beast` number, since 2 + 2 + 85 + 9 + 568 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228595681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77934 + ... + 80813.

It is an arithmetic number, because the mean of its divisors is an integer number (10834551).

Almost surely, 2^228595680 is an apocalyptic number.

228595680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228595680 is an abundant number, since it is smaller than the sum of its proper divisors (551491992).

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

228595680 is a wasteful number, since it uses less digits than its factorization.

228595680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158768 (or 158757 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 228595680 is about 15119.3809397078. The cubic root of 228595680 is about 611.4430406385.

The spelling of 228595680 in words is "two hundred twenty-eight million, five hundred ninety-five thousand, six hundred eighty".