128380700 has 72 divisors (see below), whose sum is σ = 320125344. Its totient is φ = 43776000.

The previous prime is 128380673. The next prime is 128380711. The reversal of 128380700 is 7083821.

It is a congruent number.

It is an unprimeable number.

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, 168320 + ... + 169080.

Almost surely, 2^128380700 is an apocalyptic number.

128380700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128380700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160062672).

128380700 is an abundant number, since it is smaller than the sum of its proper divisors (191744644).

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

128380700 is a wasteful number, since it uses less digits than its factorization.

128380700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 128380700 is about 11330.5207294281. The cubic root of 128380700 is about 504.4675628725.

The spelling of 128380700 in words is "one hundred twenty-eight million, three hundred eighty thousand, seven hundred".