128185355 has 8 divisors (see below), whose sum is σ = 162870912. Its totient is φ = 96515968.

The previous prime is 128185349. The next prime is 128185361. The reversal of 128185355 is 553581821.

It is an interprime number because it is at equal distance from previous prime (128185349) and next prime (128185361).

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 128185355 - 2¹² = 128181259 is a prime.

It is a Duffinian number.

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, 753947 + ... + 754116.

It is an arithmetic number, because the mean of its divisors is an integer number (20358864).

Almost surely, 2^128185355 is an apocalyptic number.

128185355 is a deficient number, since it is larger than the sum of its proper divisors (34685557).

128185355 is a wasteful number, since it uses less digits than its factorization.

128185355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508085.

The product of its digits is 48000, while the sum is 38.

The square root of 128185355 is about 11321.8971466800. The cubic root of 128185355 is about 504.2115658243.

The spelling of 128185355 in words is "one hundred twenty-eight million, one hundred eighty-five thousand, three hundred fifty-five".