128260465 has 8 divisors (see below), whose sum is σ = 154224000. Its totient is φ = 102400752.

The previous prime is 128260439. The next prime is 128260471. The reversal of 128260465 is 564062821.

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 128260465 - 2⁷ = 128260337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128260465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23209 + ... + 28198.

It is an arithmetic number, because the mean of its divisors is an integer number (19278000).

Almost surely, 2^128260465 is an apocalyptic number.

It is an amenable number.

128260465 is a deficient number, since it is larger than the sum of its proper divisors (25963535).

128260465 is an equidigital number, since it uses as much as digits as its factorization.

128260465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51911.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 128260465 is about 11325.2136845183. The cubic root of 128260465 is about 504.3100272443.

The spelling of 128260465 in words is "one hundred twenty-eight million, two hundred sixty thousand, four hundred sixty-five".