10128865 has 8 divisors (see below), whose sum is σ = 12437568. Its totient is φ = 7914480.

The previous prime is 10128841. The next prime is 10128869. The reversal of 10128865 is 56882101.

10128865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10128865 - 2²³ = 1740257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10128869) 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, 23341 + ... + 23770.

It is an arithmetic number, because the mean of its divisors is an integer number (1554696).

Almost surely, 2^10128865 is an apocalyptic number.

It is an amenable number.

10128865 is a deficient number, since it is larger than the sum of its proper divisors (2308703).

10128865 is an equidigital number, since it uses as much as digits as its factorization.

10128865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47159.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 10128865 is about 3182.5877835497. The cubic root of 10128865 is about 216.3649594249.

The spelling of 10128865 in words is "ten million, one hundred twenty-eight thousand, eight hundred sixty-five".