128751330 has 64 divisors (see below), whose sum is σ = 318504960. Its totient is φ = 33292224.

The previous prime is 128751323. The next prime is 128751349. The reversal of 128751330 is 33157821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178711 + ... + 179429.

It is an arithmetic number, because the mean of its divisors is an integer number (4976640).

Almost surely, 2^128751330 is an apocalyptic number.

128751330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128751330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159252480).

128751330 is an abundant number, since it is smaller than the sum of its proper divisors (189753630).

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

128751330 is a wasteful number, since it uses less digits than its factorization.

128751330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 128751330 is about 11346.8643245612. The cubic root of 128751330 is about 504.9525557493.

The spelling of 128751330 in words is "one hundred twenty-eight million, seven hundred fifty-one thousand, three hundred thirty".