128373072 has 80 divisors (see below), whose sum is σ = 339978240. Its totient is φ = 41728896.

The previous prime is 128373071. The next prime is 128373083. The reversal of 128373072 is 270373821.

It is a super-2 number, since 2×128373072² = 32959291229434368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128373071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575553 + ... + 575775.

It is an arithmetic number, because the mean of its divisors is an integer number (4249728).

Almost surely, 2^128373072 is an apocalyptic number.

128373072 is a gapful number since it is divisible by the number (12) 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 128373072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169989120).

128373072 is an abundant number, since it is smaller than the sum of its proper divisors (211605168).

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

128373072 is a wasteful number, since it uses less digits than its factorization.

128373072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 128373072 is about 11330.1841114785. The cubic root of 128373072 is about 504.4575713530.

The spelling of 128373072 in words is "one hundred twenty-eight million, three hundred seventy-three thousand, seventy-two".