128982345 has 16 divisors (see below), whose sum is σ = 206670912. Its totient is φ = 68690880.

The previous prime is 128982331. The next prime is 128982361. The reversal of 128982345 is 543289821.

It is not a de Polignac number, because 128982345 - 2¹⁸ = 128720201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128982297 and 128982306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5130 + ... + 16860.

It is an arithmetic number, because the mean of its divisors is an integer number (12916932).

Almost surely, 2^128982345 is an apocalyptic number.

128982345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128982345 is a deficient number, since it is larger than the sum of its proper divisors (77688567).

128982345 is a wasteful number, since it uses less digits than its factorization.

128982345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12472.

The product of its digits is 138240, while the sum is 42.

The square root of 128982345 is about 11357.0394469686. The cubic root of 128982345 is about 505.2543828343.

The spelling of 128982345 in words is "one hundred twenty-eight million, nine hundred eighty-two thousand, three hundred forty-five".