229128680 has 32 divisors (see below), whose sum is σ = 562407840. Its totient is φ = 83319360.

The previous prime is 229128673. The next prime is 229128751. The reversal of 229128680 is 86821922.

229128680 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 (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259934 + ... + 260813.

It is an arithmetic number, because the mean of its divisors is an integer number (17575245).

Almost surely, 2^229128680 is an apocalyptic number.

229128680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229128680 is an abundant number, since it is smaller than the sum of its proper divisors (333279160).

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

229128680 is a wasteful number, since it uses less digits than its factorization.

229128680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520769 (or 520765 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 229128680 is about 15136.9970601834. The cubic root of 229128680 is about 611.9178909309.

The spelling of 229128680 in words is "two hundred twenty-nine million, one hundred twenty-eight thousand, six hundred eighty".