128603996 has 12 divisors (see below), whose sum is σ = 232317120. Its totient is φ = 62227680.

The previous prime is 128603987. The next prime is 128603999. The reversal of 128603996 is 699306821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128603999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518441 + ... + 518688.

It is an arithmetic number, because the mean of its divisors is an integer number (19359760).

Almost surely, 2^128603996 is an apocalyptic number.

It is an amenable number.

128603996 is a deficient number, since it is larger than the sum of its proper divisors (103713124).

128603996 is a wasteful number, since it uses less digits than its factorization.

128603996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037164 (or 1037162 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 128603996 is about 11340.3701879612. The cubic root of 128603996 is about 504.7598714588.

The spelling of 128603996 in words is "one hundred twenty-eight million, six hundred three thousand, nine hundred ninety-six".