128039345 has 16 divisors (see below), whose sum is σ = 178220928. Its totient is φ = 86486400.

The previous prime is 128039339. The next prime is 128039371. The reversal of 128039345 is 543930821.

It is not a de Polignac number, because 128039345 - 2⁶ = 128039281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24956 + ... + 29645.

It is an arithmetic number, because the mean of its divisors is an integer number (11138808).

Almost surely, 2^128039345 is an apocalyptic number.

It is an amenable number.

128039345 is a deficient number, since it is larger than the sum of its proper divisors (50181583).

128039345 is an equidigital number, since it uses as much as digits as its factorization.

128039345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54680.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 128039345 is about 11315.4471851536. The cubic root of 128039345 is about 504.0200517448.

The spelling of 128039345 in words is "one hundred twenty-eight million, thirty-nine thousand, three hundred forty-five".