207673930728 has 640 divisors, whose sum is σ = 687230438400. Its totient is φ = 57959193600.

The previous prime is 207673930721. The next prime is 207673930759. The reversal of 207673930728 is 827039376702.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (207673930721) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 627413523 + ... + 627413853.

It is an arithmetic number, because the mean of its divisors is an integer number (1073797560).

Almost surely, 2^207673930728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207673930728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343615219200).

207673930728 is an abundant number, since it is smaller than the sum of its proper divisors (479556507672).

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

207673930728 is a wasteful number, since it uses less digits than its factorization.

207673930728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 207673930728 in words is "two hundred seven billion, six hundred seventy-three million, nine hundred thirty thousand, seven hundred twenty-eight".