128668203 has 36 divisors (see below), whose sum is σ = 199287480. Its totient is φ = 82045872.

The previous prime is 128668193. The next prime is 128668219. The reversal of 128668203 is 302866821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 128668203 - 2⁶ = 128668139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128668103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2180788 + ... + 2180846.

Almost surely, 2^128668203 is an apocalyptic number.

128668203 is a deficient number, since it is larger than the sum of its proper divisors (70619277).

128668203 is an frugal number, since it uses more digits than its factorization.

128668203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 128668203 is about 11343.2007387686. The cubic root of 128668203 is about 504.8438598418.

Multiplying 128668203 by its product of nonzero digits (27648), we get a square (3557418476544 = 1886112²).

The spelling of 128668203 in words is "one hundred twenty-eight million, six hundred sixty-eight thousand, two hundred three".