128655845 has 16 divisors (see below), whose sum is σ = 160584960. Its totient is φ = 98864064.

The previous prime is 128655841. The next prime is 128655869. The reversal of 128655845 is 548556821.

It is a cyclic number.

It is not a de Polignac number, because 128655845 - 2² = 128655841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128655796 and 128655805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128655841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10214 + ... + 19016.

It is an arithmetic number, because the mean of its divisors is an integer number (10036560).

Almost surely, 2^128655845 is an apocalyptic number.

It is an amenable number.

128655845 is a deficient number, since it is larger than the sum of its proper divisors (31929115).

128655845 is an equidigital number, since it uses as much as digits as its factorization.

128655845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924.

The product of its digits is 384000, while the sum is 44.

The square root of 128655845 is about 11342.6559940783. The cubic root of 128655845 is about 504.8276966665.

The spelling of 128655845 in words is "one hundred twenty-eight million, six hundred fifty-five thousand, eight hundred forty-five".