2128718 has 4 divisors (see below), whose sum is σ = 3193080. Its totient is φ = 1064358.

The previous prime is 2128697. The next prime is 2128727. The reversal of 2128718 is 8178212.

2128718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent 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 as a sum of consecutive naturals, namely, 532178 + ... + 532181.

It is an arithmetic number, because the mean of its divisors is an integer number (798270).

2^2128718 is an apocalyptic number.

2128718 is a deficient number, since it is larger than the sum of its proper divisors (1064362).

2128718 is a wasteful number, since it uses less digits than its factorization.

2128718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064361.

The product of its digits is 1792, while the sum is 29.

The square root of 2128718 is about 1459.0126798627. The cubic root of 2128718 is about 128.6390164334.

The spelling of 2128718 in words is "two million, one hundred twenty-eight thousand, seven hundred eighteen".