128077347 has 8 divisors (see below), whose sum is σ = 179757760. Its totient is φ = 80890920.

The previous prime is 128077333. The next prime is 128077351. The reversal of 128077347 is 743770821.

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

It is not a de Polignac number, because 128077347 - 2⁴ = 128077331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128077447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123429 + ... + 1123542.

It is an arithmetic number, because the mean of its divisors is an integer number (22469720).

Almost surely, 2^128077347 is an apocalyptic number.

128077347 is a deficient number, since it is larger than the sum of its proper divisors (51680413).

128077347 is a wasteful number, since it uses less digits than its factorization.

128077347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246993.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 128077347 is about 11317.1262695085. The cubic root of 128077347 is about 504.0699110944.

The spelling of 128077347 in words is "one hundred twenty-eight million, seventy-seven thousand, three hundred forty-seven".