128056367 has 4 divisors (see below), whose sum is σ = 128188416. Its totient is φ = 127924320.

The previous prime is 128056351. The next prime is 128056399. The reversal of 128056367 is 763650821.

128056367 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128056367 - 2⁴ = 128056351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128056367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128056307) 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 3 ways as a sum of consecutive naturals, for example, 64559 + ... + 66512.

It is an arithmetic number, because the mean of its divisors is an integer number (32047104).

Almost surely, 2^128056367 is an apocalyptic number.

128056367 is a deficient number, since it is larger than the sum of its proper divisors (132049).

128056367 is an equidigital number, since it uses as much as digits as its factorization.

128056367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132048.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 128056367 is about 11316.1993177922. The cubic root of 128056367 is about 504.0423861535.

The spelling of 128056367 in words is "one hundred twenty-eight million, fifty-six thousand, three hundred sixty-seven".