2128918 has 8 divisors (see below), whose sum is σ = 3483720. Its totient is φ = 967680.

The previous prime is 2128891. The next prime is 2128933. The reversal of 2128918 is 8198212.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2128918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48363 + ... + 48406.

It is an arithmetic number, because the mean of its divisors is an integer number (435465).

2^2128918 is an apocalyptic number.

2128918 is a deficient number, since it is larger than the sum of its proper divisors (1354802).

2128918 is a wasteful number, since it uses less digits than its factorization.

2128918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96782.

The product of its digits is 2304, while the sum is 31.

The square root of 2128918 is about 1459.0812177531. The cubic root of 2128918 is about 128.6430449923.

The spelling of 2128918 in words is "two million, one hundred twenty-eight thousand, nine hundred eighteen".