207309228 has 48 divisors (see below), whose sum is σ = 581925120. Its totient is φ = 56113344.

The previous prime is 207309227. The next prime is 207309253. The reversal of 207309228 is 822903702.

207309228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (207309227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63351 + ... + 66542.

It is an arithmetic number, because the mean of its divisors is an integer number (12123440).

Almost surely, 2^207309228 is an apocalyptic number.

207309228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

207309228 is an abundant number, since it is smaller than the sum of its proper divisors (374615892).

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

207309228 is a wasteful number, since it uses less digits than its factorization.

207309228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129926 (or 129924 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 207309228 is about 14398.2369754078. The cubic root of 207309228 is about 591.8425858253.

The spelling of 207309228 in words is "two hundred seven million, three hundred nine thousand, two hundred twenty-eight".