128214307 has 16 divisors (see below), whose sum is σ = 143640000. Its totient is φ = 113629824.

The previous prime is 128214269. The next prime is 128214319. The reversal of 128214307 is 703412821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128214307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128214377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74169 + ... + 75877.

It is an arithmetic number, because the mean of its divisors is an integer number (8977500).

Almost surely, 2^128214307 is an apocalyptic number.

128214307 is a deficient number, since it is larger than the sum of its proper divisors (15425693).

128214307 is a wasteful number, since it uses less digits than its factorization.

128214307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 128214307 is about 11323.1756587982. The cubic root of 128214307 is about 504.2495234479.

The spelling of 128214307 in words is "one hundred twenty-eight million, two hundred fourteen thousand, three hundred seven".