128330408 has 16 divisors (see below), whose sum is σ = 253284000. Its totient is φ = 60788016.

The previous prime is 128330407. The next prime is 128330459. The reversal of 128330408 is 804033821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128330407) 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 3 ways as a sum of consecutive naturals, for example, 421988 + ... + 422291.

It is an arithmetic number, because the mean of its divisors is an integer number (15830250).

Almost surely, 2^128330408 is an apocalyptic number.

It is an amenable number.

128330408 is a deficient number, since it is larger than the sum of its proper divisors (124953592).

128330408 is a wasteful number, since it uses less digits than its factorization.

128330408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844304 (or 844300 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 128330408 is about 11328.3011965608. The cubic root of 128330408 is about 504.4016807051.

The spelling of 128330408 in words is "one hundred twenty-eight million, three hundred thirty thousand, four hundred eight".