128452717 has 8 divisors (see below), whose sum is σ = 129412800. Its totient is φ = 127496544.

The previous prime is 128452699. The next prime is 128452729. The reversal of 128452717 is 717254821.

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

It is a cyclic number.

It is not a de Polignac number, because 128452717 - 2¹⁹ = 127928429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128452777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99009 + ... + 100297.

It is an arithmetic number, because the mean of its divisors is an integer number (16176600).

Almost surely, 2^128452717 is an apocalyptic number.

It is an amenable number.

128452717 is a deficient number, since it is larger than the sum of its proper divisors (960083).

128452717 is a wasteful number, since it uses less digits than its factorization.

128452717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955.

The product of its digits is 31360, while the sum is 37.

The square root of 128452717 is about 11333.6982931433. The cubic root of 128452717 is about 504.5618746843.

The spelling of 128452717 in words is "one hundred twenty-eight million, four hundred fifty-two thousand, seven hundred seventeen".