128203933 has 8 divisors (see below), whose sum is σ = 150617376. Its totient is φ = 107583600.

The previous prime is 128203931. The next prime is 128203973. The reversal of 128203933 is 339302821.

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 128203933 - 2¹ = 128203931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128203895 and 128203904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128203931) 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, 448123 + ... + 448408.

It is an arithmetic number, because the mean of its divisors is an integer number (18827172).

Almost surely, 2^128203933 is an apocalyptic number.

128203933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

128203933 is a deficient number, since it is larger than the sum of its proper divisors (22413443).

128203933 is a wasteful number, since it uses less digits than its factorization.

128203933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896555.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 128203933 is about 11322.7175624936. The cubic root of 128203933 is about 504.2359232349.

The spelling of 128203933 in words is "one hundred twenty-eight million, two hundred three thousand, nine hundred thirty-three".