128738714 has 16 divisors (see below), whose sum is σ = 215134920. Its totient is φ = 57368640.

The previous prime is 128738713. The next prime is 128738717. The reversal of 128738714 is 417837821.

It can be written as a sum of positive squares in 4 ways, for example, as 58262689 + 70476025 = 7633^2 + 8395^2 .

It is not an unprimeable number, because it can be changed into a prime (128738713) 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, 84617 + ... + 86124.

Almost surely, 2^128738714 is an apocalyptic number.

128738714 is a deficient number, since it is larger than the sum of its proper divisors (86396206).

128738714 is a wasteful number, since it uses less digits than its factorization.

128738714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170785.

The product of its digits is 75264, while the sum is 41.

The square root of 128738714 is about 11346.3083864312. The cubic root of 128738714 is about 504.9360622251.

The spelling of 128738714 in words is "one hundred twenty-eight million, seven hundred thirty-eight thousand, seven hundred fourteen".