228782680 has 32 divisors (see below), whose sum is σ = 588299040. Its totient is φ = 78439680.

The previous prime is 228782677. The next prime is 228782681. The reversal of 228782680 is 86287822.

228782680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228782681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408261 + ... + 408820.

It is an arithmetic number, because the mean of its divisors is an integer number (18384345).

Almost surely, 2^228782680 is an apocalyptic number.

228782680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228782680 is an abundant number, since it is smaller than the sum of its proper divisors (359516360).

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

228782680 is a wasteful number, since it uses less digits than its factorization.

228782680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817099 (or 817095 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 228782680 is about 15125.5637911451. The cubic root of 228782680 is about 611.6097231186.

The spelling of 228782680 in words is "two hundred twenty-eight million, seven hundred eighty-two thousand, six hundred eighty".