128318670 has 48 divisors (see below), whose sum is σ = 338216112. Its totient is φ = 33747840.

The previous prime is 128318657. The next prime is 128318689. The reversal of 128318670 is 76813821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3196 + ... + 16335.

It is an arithmetic number, because the mean of its divisors is an integer number (7046169).

Almost surely, 2^128318670 is an apocalyptic number.

128318670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128318670 is an abundant number, since it is smaller than the sum of its proper divisors (209897442).

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

128318670 is a wasteful number, since it uses less digits than its factorization.

128318670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19617 (or 19614 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128318670 is about 11327.7831017371. The cubic root of 128318670 is about 504.3863015300.

The spelling of 128318670 in words is "one hundred twenty-eight million, three hundred eighteen thousand, six hundred seventy".