128984700 has 72 divisors (see below), whose sum is σ = 401915248. Its totient is φ = 31749120.

The previous prime is 128984699. The next prime is 128984747. The reversal of 128984700 is 7489821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12637 + ... + 20436.

Almost surely, 2^128984700 is an apocalyptic number.

128984700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128984700 is an abundant number, since it is smaller than the sum of its proper divisors (272930548).

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

128984700 is a wasteful number, since it uses less digits than its factorization.

128984700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33103 (or 33096 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 128984700 is about 11357.1431266846. The cubic root of 128984700 is about 505.2574578464.

The spelling of 128984700 in words is "one hundred twenty-eight million, nine hundred eighty-four thousand, seven hundred".