128007830 has 8 divisors (see below), whose sum is σ = 230414112. Its totient is φ = 51203128.

The previous prime is 128007809. The next prime is 128007853. The reversal of 128007830 is 38700821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128007793 and 128007802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400382 + ... + 6400401.

It is an arithmetic number, because the mean of its divisors is an integer number (28801764).

Almost surely, 2^128007830 is an apocalyptic number.

128007830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128007830 is a deficient number, since it is larger than the sum of its proper divisors (102406282).

128007830 is a wasteful number, since it uses less digits than its factorization.

128007830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800790.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 128007830 is about 11314.0545340740. The cubic root of 128007830 is about 503.9786959795.

The spelling of 128007830 in words is "one hundred twenty-eight million, seven thousand, eight hundred thirty".