128805714 has 20 divisors (see below), whose sum is σ = 288620574. Its totient is φ = 42935184.

The previous prime is 128805701. The next prime is 128805751. The reversal of 128805714 is 417508821.

128805714 is a `hidden beast` number, since 1 + 2 + 8 + 80 + 571 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123943689 + 4862025 = 11133^2 + 2205^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 397387 + ... + 397710.

Almost surely, 2^128805714 is an apocalyptic number.

128805714 is an abundant number, since it is smaller than the sum of its proper divisors (159814860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128805714 is an equidigital number, since it uses as much as digits as its factorization.

128805714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795111 (or 795102 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 128805714 is about 11349.2605045439. The cubic root of 128805714 is about 505.0236423268.

The spelling of 128805714 in words is "one hundred twenty-eight million, eight hundred five thousand, seven hundred fourteen".