128752797 has 8 divisors (see below), whose sum is σ = 180705760. Its totient is φ = 81317520.

The previous prime is 128752777. The next prime is 128752817. The reversal of 128752797 is 797257821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128752777) and next prime (128752817).

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

It is not a de Polignac number, because 128752797 - 2¹⁸ = 128490653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128752777) 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, 1129354 + ... + 1129467.

It is an arithmetic number, because the mean of its divisors is an integer number (22588220).

Almost surely, 2^128752797 is an apocalyptic number.

It is an amenable number.

128752797 is a deficient number, since it is larger than the sum of its proper divisors (51952963).

128752797 is a wasteful number, since it uses less digits than its factorization.

128752797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258843.

The product of its digits is 493920, while the sum is 48.

The square root of 128752797 is about 11346.9289677868. The cubic root of 128752797 is about 504.9544735614.

The spelling of 128752797 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, seven hundred ninety-seven".