128297300 has 72 divisors (see below), whose sum is σ = 297230976. Its totient is φ = 47900160.

The previous prime is 128297297. The next prime is 128297303. The reversal of 128297300 is 3792821.

It is an interprime number because it is at equal distance from previous prime (128297297) and next prime (128297303).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128297303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276869 + ... + 277331.

It is an arithmetic number, because the mean of its divisors is an integer number (4128208).

Almost surely, 2^128297300 is an apocalyptic number.

128297300 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 128297300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148615488).

128297300 is an abundant number, since it is smaller than the sum of its proper divisors (168933676).

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

128297300 is a wasteful number, since it uses less digits than its factorization.

128297300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 128297300 is about 11326.8398064067. The cubic root of 128297300 is about 504.3583000612.

The spelling of 128297300 in words is "one hundred twenty-eight million, two hundred ninety-seven thousand, three hundred".