128807914 has 16 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 61148880.

The previous prime is 128807911. The next prime is 128807953. The reversal of 128807914 is 419708821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128807911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16314 + ... + 22885.

It is an arithmetic number, because the mean of its divisors is an integer number (12700800).

Almost surely, 2^128807914 is an apocalyptic number.

128807914 is a deficient number, since it is larger than the sum of its proper divisors (74404886).

128807914 is a wasteful number, since it uses less digits than its factorization.

128807914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39285.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 128807914 is about 11349.3574267445. The cubic root of 128807914 is about 505.0265175763.

The spelling of 128807914 in words is "one hundred twenty-eight million, eight hundred seven thousand, nine hundred fourteen".