128023792 has 40 divisors (see below), whose sum is σ = 270920160. Its totient is φ = 58248960.

The previous prime is 128023783. The next prime is 128023793. The reversal of 128023792 is 297320821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128023793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10434 + ... + 19102.

It is an arithmetic number, because the mean of its divisors is an integer number (6773004).

Almost surely, 2^128023792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128023792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135460080).

128023792 is an abundant number, since it is smaller than the sum of its proper divisors (142896368).

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

128023792 is a wasteful number, since it uses less digits than its factorization.

128023792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761 (or 8755 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 128023792 is about 11314.7599179125. The cubic root of 128023792 is about 503.9996430669. Note that the first 3 decimals are identical.

The spelling of 128023792 in words is "one hundred twenty-eight million, twenty-three thousand, seven hundred ninety-two".