207128 has 16 divisors (see below), whose sum is σ = 411480. Its totient is φ = 97408.

The previous prime is 207127. The next prime is 207139. The reversal of 207128 is 821702.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 897.

2²⁰⁷¹²⁸ is an apocalyptic number.

It is an amenable number.

207128 is a deficient number, since it is larger than the sum of its proper divisors (204352).

207128 is a wasteful number, since it uses less digits than its factorization.

207128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 207128 is about 455.1131727384. The cubic root of 207128 is about 59.1670074260.

The spelling of 207128 in words is "two hundred seven thousand, one hundred twenty-eight".