128943210 has 32 divisors (see below), whose sum is σ = 337597632. Its totient is φ = 31258880.

The previous prime is 128943179. The next prime is 128943257. The reversal of 128943210 is 12349821.

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 15 ways as a sum of consecutive naturals, for example, 195039 + ... + 195698.

It is an arithmetic number, because the mean of its divisors is an integer number (10549926).

Almost surely, 2^128943210 is an apocalyptic number.

128943210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128943210 is an abundant number, since it is smaller than the sum of its proper divisors (208654422).

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

128943210 is a wasteful number, since it uses less digits than its factorization.

128943210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390758.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 128943210 is about 11355.3163760417. The cubic root of 128943210 is about 505.2032773117.

The spelling of 128943210 in words is "one hundred twenty-eight million, nine hundred forty-three thousand, two hundred ten".