128339465 has 8 divisors (see below), whose sum is σ = 154070208. Its totient is φ = 102629680.

The previous prime is 128339461. The next prime is 128339467. The reversal of 128339465 is 564933821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128339465 - 2² = 128339461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128339461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16274 + ... + 22836.

It is an arithmetic number, because the mean of its divisors is an integer number (19258776).

Almost surely, 2^128339465 is an apocalyptic number.

It is an amenable number.

128339465 is a deficient number, since it is larger than the sum of its proper divisors (25730743).

128339465 is an equidigital number, since it uses as much as digits as its factorization.

128339465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479.

The product of its digits is 155520, while the sum is 41.

The square root of 128339465 is about 11328.7009405315. The cubic root of 128339465 is about 504.4135465822.

The spelling of 128339465 in words is "one hundred twenty-eight million, three hundred thirty-nine thousand, four hundred sixty-five".