128732793 has 8 divisors (see below), whose sum is σ = 196164288. Its totient is φ = 73561584.

The previous prime is 128732777. The next prime is 128732803. The reversal of 128732793 is 397237821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128732793 - 2⁴ = 128732777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128732713) 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, 3065046 + ... + 3065087.

It is an arithmetic number, because the mean of its divisors is an integer number (24520536).

Almost surely, 2^128732793 is an apocalyptic number.

It is an amenable number.

128732793 is a deficient number, since it is larger than the sum of its proper divisors (67431495).

128732793 is an equidigital number, since it uses as much as digits as its factorization.

128732793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130143.

The product of its digits is 127008, while the sum is 42.

The square root of 128732793 is about 11346.0474615612. The cubic root of 128732793 is about 504.9283210358.

The spelling of 128732793 in words is "one hundred twenty-eight million, seven hundred thirty-two thousand, seven hundred ninety-three".