128076520 has 64 divisors (see below), whose sum is σ = 338567040. Its totient is φ = 42988800.

The previous prime is 128076517. The next prime is 128076523. The reversal of 128076520 is 25670821.

It is an interprime number because it is at equal distance from previous prime (128076517) and next prime (128076523).

It is not an unprimeable number, because it can be changed into a prime (128076523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5476 + ... + 16915.

It is an arithmetic number, because the mean of its divisors is an integer number (5290110).

Almost surely, 2^128076520 is an apocalyptic number.

128076520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128076520 is an abundant number, since it is smaller than the sum of its proper divisors (210490520).

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

128076520 is a wasteful number, since it uses less digits than its factorization.

128076520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22426 (or 22422 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 128076520 is about 11317.0897319055. The cubic root of 128076520 is about 504.0688261596.

The spelling of 128076520 in words is "one hundred twenty-eight million, seventy-six thousand, five hundred twenty".