2128715 has 8 divisors (see below), whose sum is σ = 2614128. Its totient is φ = 1663200.

The previous prime is 2128697. The next prime is 2128727. The reversal of 2128715 is 5178212.

2128715 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 2128715 - 2¹⁰ = 2127691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4736 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (326766).

2^2128715 is an apocalyptic number.

2128715 is a deficient number, since it is larger than the sum of its proper divisors (485413).

2128715 is an equidigital number, since it uses as much as digits as its factorization.

2128715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949.

The product of its digits is 1120, while the sum is 26.

The square root of 2128715 is about 1459.0116517698. The cubic root of 2128715 is about 128.6389560031.

The spelling of 2128715 in words is "two million, one hundred twenty-eight thousand, seven hundred fifteen".