128304001 has 6 divisors (see below), whose sum is σ = 149251650. Its totient is φ = 109974816.

The previous prime is 128303999. The next prime is 128304019. The reversal of 128304001 is 100403821.

It can be written as a sum of positive squares in only one way, i.e., 110250000 + 18054001 = 10500^2 + 4249^2 .

It is not a de Polignac number, because 128304001 - 2¹ = 128303999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128304001.

It is not an unprimeable number, because it can be changed into a prime (128304061) 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 5 ways as a sum of consecutive naturals, for example, 1309176 + ... + 1309273.

It is an arithmetic number, because the mean of its divisors is an integer number (24875275).

Almost surely, 2^128304001 is an apocalyptic number.

It is an amenable number.

128304001 is a deficient number, since it is larger than the sum of its proper divisors (20947649).

128304001 is an equidigital number, since it uses as much as digits as its factorization.

128304001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618463 (or 2618456 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 128304001 is about 11327.1356043794. The cubic root of 128304001 is about 504.3670808283.

Adding to 128304001 its reverse (100403821), we get a palindrome (228707822).

The spelling of 128304001 in words is "one hundred twenty-eight million, three hundred four thousand, one".