128301644 has 24 divisors (see below), whose sum is σ = 231975408. Its totient is φ = 62043840.

The previous prime is 128301631. The next prime is 128301647. The reversal of 128301644 is 446103821.

It is a super-2 number, since 2×128301644² = 32922623706205472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128301647) 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, 23099 + ... + 28109.

It is an arithmetic number, because the mean of its divisors is an integer number (9665642).

Almost surely, 2^128301644 is an apocalyptic number.

It is an amenable number.

128301644 is a deficient number, since it is larger than the sum of its proper divisors (103673764).

128301644 is a wasteful number, since it uses less digits than its factorization.

128301644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225 (or 5223 counting only the distinct ones).

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

The square root of 128301644 is about 11327.0315617111. The cubic root of 128301644 is about 504.3639923289.

The spelling of 128301644 in words is "one hundred twenty-eight million, three hundred one thousand, six hundred forty-four".