128713106 has 36 divisors (see below), whose sum is σ = 213642702. Its totient is φ = 58145472.

The previous prime is 128713099. The next prime is 128713141. The reversal of 128713106 is 601317821.

It can be written as a sum of positive squares in only one way, i.e., 119355625 + 9357481 = 10925^2 + 3059^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 381770 + ... + 382106.

Almost surely, 2^128713106 is an apocalyptic number.

128713106 is a deficient number, since it is larger than the sum of its proper divisors (84929596).

128713106 is a wasteful number, since it uses less digits than its factorization.

128713106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 128713106 is about 11345.1798575430. The cubic root of 128713106 is about 504.9025802995.

The spelling of 128713106 in words is "one hundred twenty-eight million, seven hundred thirteen thousand, one hundred six".