128204963 has 8 divisors (see below), whose sum is σ = 132253680. Its totient is φ = 124187040.

The previous prime is 128204953. The next prime is 128204971. The reversal of 128204963 is 369402821.

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 128204963 - 2⁶ = 128204899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128204903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908 + ... + 16038.

It is an arithmetic number, because the mean of its divisors is an integer number (16531710).

Almost surely, 2^128204963 is an apocalyptic number.

128204963 is a deficient number, since it is larger than the sum of its proper divisors (4048717).

128204963 is a wasteful number, since it uses less digits than its factorization.

128204963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15397.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 128204963 is about 11322.7630461827. The cubic root of 128204963 is about 504.2372735877.

The spelling of 128204963 in words is "one hundred twenty-eight million, two hundred four thousand, nine hundred sixty-three".