2171874 has 8 divisors (see below), whose sum is σ = 4343760. Its totient is φ = 723956.

The previous prime is 2171857. The next prime is 2171881. The reversal of 2171874 is 4781712.

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

2171874 is an admirable 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, 180984 + ... + 180995.

It is an arithmetic number, because the mean of its divisors is an integer number (542970).

2^2171874 is an apocalyptic number.

2171874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171874 is a wasteful number, since it uses less digits than its factorization.

2171874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361984.

The product of its digits is 3136, while the sum is 30.

The square root of 2171874 is about 1473.7279260433. The cubic root of 2171874 is about 129.5025168088.

The spelling of 2171874 in words is "two million, one hundred seventy-one thousand, eight hundred seventy-four".