128914634 has 16 divisors (see below), whose sum is σ = 194980200. Its totient is φ = 63923904.

The previous prime is 128914613. The next prime is 128914637. The reversal of 128914634 is 436419821.

It can be written as a sum of positive squares in 4 ways, for example, as 120934009 + 7980625 = 10997^2 + 2825^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128914637) 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, 181472 + ... + 182180.

Almost surely, 2^128914634 is an apocalyptic number.

128914634 is a deficient number, since it is larger than the sum of its proper divisors (66065566).

128914634 is a wasteful number, since it uses less digits than its factorization.

128914634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337.

The product of its digits is 41472, while the sum is 38.

The square root of 128914634 is about 11354.0580410706. The cubic root of 128914634 is about 505.1659540192.

The spelling of 128914634 in words is "one hundred twenty-eight million, nine hundred fourteen thousand, six hundred thirty-four".