128383280 has 40 divisors (see below), whose sum is σ = 299605824. Its totient is φ = 51161600.

The previous prime is 128383279. The next prime is 128383289. The reversal of 128383280 is 82383821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 128383280.

It is not an unprimeable number, because it can be changed into a prime (128383289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19625 + ... + 25335.

Almost surely, 2^128383280 is an apocalyptic number.

128383280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128383280 is an abundant number, since it is smaller than the sum of its proper divisors (171222544).

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

128383280 is a wasteful number, since it uses less digits than its factorization.

128383280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005 (or 5999 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 128383280 is about 11330.6345806402. The cubic root of 128383280 is about 504.4709421904.

The spelling of 128383280 in words is "one hundred twenty-eight million, three hundred eighty-three thousand, two hundred eighty".