128469017 has 6 divisors (see below), whose sum is σ = 136075518. Its totient is φ = 120868032.

The previous prime is 128468987. The next prime is 128469037. The reversal of 128469017 is 710964821.

It can be written as a sum of positive squares in 3 ways, for example, as 1478656 + 126990361 = 1216^2 + 11269^2 .

It is not a de Polignac number, because 128469017 - 2⁸ = 128468761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128469037) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 45359 + ... + 48107.

It is an arithmetic number, because the mean of its divisors is an integer number (22679253).

Almost surely, 2^128469017 is an apocalyptic number.

128469017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

128469017 is a deficient number, since it is larger than the sum of its proper divisors (7606501).

128469017 is an frugal number, since it uses more digits than its factorization.

128469017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 128469017 is about 11334.4173648229. The cubic root of 128469017 is about 504.5832158982.

The spelling of 128469017 in words is "one hundred twenty-eight million, four hundred sixty-nine thousand, seventeen".