128935537 has 8 divisors (see below), whose sum is σ = 135374400. Its totient is φ = 122629584.

The previous prime is 128935507. The next prime is 128935561. The reversal of 128935537 is 735539821.

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

It is a cyclic number.

It is not a de Polignac number, because 128935537 - 2⁷ = 128935409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128935493 and 128935502.

It is not an unprimeable number, because it can be changed into a prime (128935507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31237 + ... + 35122.

It is an arithmetic number, because the mean of its divisors is an integer number (16921800).

Almost surely, 2^128935537 is an apocalyptic number.

It is an amenable number.

128935537 is a deficient number, since it is larger than the sum of its proper divisors (6438863).

128935537 is an equidigital number, since it uses as much as digits as its factorization.

128935537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66455.

The product of its digits is 226800, while the sum is 43.

The square root of 128935537 is about 11354.9785116485. The cubic root of 128935537 is about 505.1932561000.

The spelling of 128935537 in words is "one hundred twenty-eight million, nine hundred thirty-five thousand, five hundred thirty-seven".