128967320 has 64 divisors (see below), whose sum is σ = 300373920. Its totient is φ = 49803264.

The previous prime is 128967299. The next prime is 128967331. The reversal of 128967320 is 23769821.

It is a congruent number.

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, 166454 + ... + 167226.

Almost surely, 2^128967320 is an apocalyptic number.

128967320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128967320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150186960).

128967320 is an abundant number, since it is smaller than the sum of its proper divisors (171406600).

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

128967320 is a wasteful number, since it uses less digits than its factorization.

128967320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 128967320 is about 11356.3779436931. The cubic root of 128967320 is about 505.2347632450.

The spelling of 128967320 in words is "one hundred twenty-eight million, nine hundred sixty-seven thousand, three hundred twenty".