128871792 has 60 divisors (see below), whose sum is σ = 412188400. Its totient is φ = 36820224.

The previous prime is 128871773. The next prime is 128871797. The reversal of 128871792 is 297178821.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128871797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62917 + ... + 64932.

Almost surely, 2^128871792 is an apocalyptic number.

128871792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128871792 is an abundant number, since it is smaller than the sum of its proper divisors (283316608).

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

128871792 is a wasteful number, since it uses less digits than its factorization.

128871792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127870 (or 127861 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 128871792 is about 11352.1712460657. The cubic root of 128871792 is about 505.1099874801.

The spelling of 128871792 in words is "one hundred twenty-eight million, eight hundred seventy-one thousand, seven hundred ninety-two".