128353305 has 8 divisors (see below), whose sum is σ = 205365312. Its totient is φ = 68455088.

The previous prime is 128353297. The next prime is 128353327. The reversal of 128353305 is 503353821.

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 128353305 - 2³ = 128353297 is a prime.

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, 4278429 + ... + 4278458.

It is an arithmetic number, because the mean of its divisors is an integer number (25670664).

Almost surely, 2^128353305 is an apocalyptic number.

128353305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128353305 is a deficient number, since it is larger than the sum of its proper divisors (77012007).

128353305 is an equidigital number, since it uses as much as digits as its factorization.

128353305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8556895.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 128353305 is about 11329.3117619739. The cubic root of 128353305 is about 504.4316777485.

The spelling of 128353305 in words is "one hundred twenty-eight million, three hundred fifty-three thousand, three hundred five".