128730338 has 32 divisors (see below), whose sum is σ = 214228800. Its totient is φ = 57530560.

The previous prime is 128730323. The next prime is 128730353. The reversal of 128730338 is 833037821.

It is an interprime number because it is at equal distance from previous prime (128730323) and next prime (128730353).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128730298 and 128730307.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 566981 + ... + 567207.

It is an arithmetic number, because the mean of its divisors is an integer number (6694650).

Almost surely, 2^128730338 is an apocalyptic number.

128730338 is a deficient number, since it is larger than the sum of its proper divisors (85498462).

128730338 is a wasteful number, since it uses less digits than its factorization.

128730338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 128730338 is about 11345.9392735904. The cubic root of 128730338 is about 504.9251112686.

The spelling of 128730338 in words is "one hundred twenty-eight million, seven hundred thirty thousand, three hundred thirty-eight".