128301630 has 16 divisors (see below), whose sum is σ = 307923984. Its totient is φ = 34213760.

The previous prime is 128301581. The next prime is 128301631. The reversal of 128301630 is 36103821.

It is a super-2 number, since 2×128301630² = 32922616521313800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128301630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128301631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138331 + ... + 2138390.

It is an arithmetic number, because the mean of its divisors is an integer number (19245249).

Almost surely, 2^128301630 is an apocalyptic number.

128301630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128301630 is an abundant number, since it is smaller than the sum of its proper divisors (179622354).

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

128301630 is a wasteful number, since it uses less digits than its factorization.

128301630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276731.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 128301630 is about 11327.0309437204. The cubic root of 128301630 is about 504.3639739839.

The spelling of 128301630 in words is "one hundred twenty-eight million, three hundred one thousand, six hundred thirty".