128383953 has 8 divisors (see below), whose sum is σ = 178621248. Its totient is φ = 81867984.

The previous prime is 128383943. The next prime is 128383961. The reversal of 128383953 is 359383821.

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

It is a de Polignac number, because none of the positive numbers 2^k-128383953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128383943) 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, 930250 + ... + 930387.

It is an arithmetic number, because the mean of its divisors is an integer number (22327656).

Almost surely, 2^128383953 is an apocalyptic number.

It is an amenable number.

128383953 is a deficient number, since it is larger than the sum of its proper divisors (50237295).

128383953 is a wasteful number, since it uses less digits than its factorization.

128383953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860663.

The product of its digits is 155520, while the sum is 42.

The square root of 128383953 is about 11330.6642788497. The cubic root of 128383953 is about 504.4718236872.

The spelling of 128383953 in words is "one hundred twenty-eight million, three hundred eighty-three thousand, nine hundred fifty-three".