128380707 has 40 divisors (see below), whose sum is σ = 236048736. Its totient is φ = 67713408.

The previous prime is 128380673. The next prime is 128380711. The reversal of 128380707 is 707083821.

It is not a de Polignac number, because 128380707 - 2¹⁰ = 128379683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128380607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1338 + ... + 16079.

Almost surely, 2^128380707 is an apocalyptic number.

128380707 is a deficient number, since it is larger than the sum of its proper divisors (107668029).

128380707 is a wasteful number, since it uses less digits than its factorization.

128380707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17449 (or 17440 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 128380707 is about 11330.5210383283. The cubic root of 128380707 is about 504.4675720412.

The spelling of 128380707 in words is "one hundred twenty-eight million, three hundred eighty thousand, seven hundred seven".