128220002 has 8 divisors (see below), whose sum is σ = 194764800. Its totient is φ = 63298404.

The previous prime is 128219983. The next prime is 128220007. The reversal of 128220002 is 200022821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (128220007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405602 + ... + 405917.

It is an arithmetic number, because the mean of its divisors is an integer number (24345600).

Almost surely, 2^128220002 is an apocalyptic number.

128220002 is a deficient number, since it is larger than the sum of its proper divisors (66544798).

128220002 is an equidigital number, since it uses as much as digits as its factorization.

128220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811600.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 128220002 is about 11323.4271313945. The cubic root of 128220002 is about 504.2569892255.

Adding to 128220002 its reverse (200022821), we get a palindrome (328242823).

The spelling of 128220002 in words is "one hundred twenty-eight million, two hundred twenty thousand, two".