128696100 has 72 divisors (see below), whose sum is σ = 401016000. Its totient is φ = 31678080.

The previous prime is 128696093. The next prime is 128696107. The reversal of 128696100 is 1696821.

It is an interprime number because it is at equal distance from previous prime (128696093) and next prime (128696107).

It is not an unprimeable number, because it can be changed into a prime (128696107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12600 + ... + 20399.

Almost surely, 2^128696100 is an apocalyptic number.

128696100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128696100 is an abundant number, since it is smaller than the sum of its proper divisors (272319900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128696100 is a wasteful number, since it uses less digits than its factorization.

128696100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33029 (or 33022 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 128696100 is about 11344.4303514985. The cubic root of 128696100 is about 504.8803428555.

The spelling of 128696100 in words is "one hundred twenty-eight million, six hundred ninety-six thousand, one hundred".