128795520 has 288 divisors, whose sum is σ = 490817880. Its totient is φ = 28643328.

The previous prime is 128795501. The next prime is 128795521. The reversal of 128795520 is 25597821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128795521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3480942 + ... + 3480978.

Almost surely, 2^128795520 is an apocalyptic number.

128795520 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 128795520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245408940).

128795520 is an abundant number, since it is smaller than the sum of its proper divisors (362022360).

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

128795520 is an equidigital number, since it uses as much as digits as its factorization.

128795520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 128795520 is about 11348.8113915070. The cubic root of 128795520 is about 505.0103190389.

The spelling of 128795520 in words is "one hundred twenty-eight million, seven hundred ninety-five thousand, five hundred twenty".