128607297 has 16 divisors (see below), whose sum is σ = 211048320. Its totient is φ = 67836672.

The previous prime is 128607293. The next prime is 128607307. The reversal of 128607297 is 792706821.

It is not a de Polignac number, because 128607297 - 2² = 128607293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128607293) 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, 235272 + ... + 235817.

It is an arithmetic number, because the mean of its divisors is an integer number (13190520).

Almost surely, 2^128607297 is an apocalyptic number.

It is an amenable number.

128607297 is a deficient number, since it is larger than the sum of its proper divisors (82441023).

128607297 is a wasteful number, since it uses less digits than its factorization.

128607297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471112.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 128607297 is about 11340.5157290134. The cubic root of 128607297 is about 504.7641901377.

The spelling of 128607297 in words is "one hundred twenty-eight million, six hundred seven thousand, two hundred ninety-seven".