128232680 has 32 divisors (see below), whose sum is σ = 288851400. Its totient is φ = 51234816.

The previous prime is 128232679. The next prime is 128232719. The reversal of 128232680 is 86232821.

It can be written as a sum of positive squares in 4 ways, for example, as 53202436 + 75030244 = 7294^2 + 8662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58484 + ... + 60636.

Almost surely, 2^128232680 is an apocalyptic number.

128232680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128232680 is an abundant number, since it is smaller than the sum of its proper divisors (160618720).

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

128232680 is a wasteful number, since it uses less digits than its factorization.

128232680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653 (or 3649 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128232680 is about 11323.9869304057. The cubic root of 128232680 is about 504.2736084719.

The spelling of 128232680 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, six hundred eighty".