128072307 has 16 divisors (see below), whose sum is σ = 186738048. Its totient is φ = 77431680.

The previous prime is 128072267. The next prime is 128072317. The reversal of 128072307 is 703270821.

It is not a de Polignac number, because 128072307 - 2¹⁰ = 128071283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128072317) 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, 9808 + ... + 18770.

It is an arithmetic number, because the mean of its divisors is an integer number (11671128).

Almost surely, 2^128072307 is an apocalyptic number.

128072307 is a deficient number, since it is larger than the sum of its proper divisors (58665741).

128072307 is a wasteful number, since it uses less digits than its factorization.

128072307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 128072307 is about 11316.9035959488. The cubic root of 128072307 is about 504.0632990855.

The spelling of 128072307 in words is "one hundred twenty-eight million, seventy-two thousand, three hundred seven".