2171424 has 24 divisors (see below), whose sum is σ = 5700240. Its totient is φ = 723776.

The previous prime is 2171387. The next prime is 2171431. The reversal of 2171424 is 4241712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2171424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11214 + ... + 11405.

It is an arithmetic number, because the mean of its divisors is an integer number (237510).

2^2171424 is an apocalyptic number.

2171424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2171424 is an abundant number, since it is smaller than the sum of its proper divisors (3528816).

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

2171424 is a wasteful number, since it uses less digits than its factorization.

2171424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22632 (or 22624 counting only the distinct ones).

The product of its digits is 448, while the sum is 21.

The square root of 2171424 is about 1473.5752440917. The cubic root of 2171424 is about 129.4935721282.

The spelling of 2171424 in words is "two million, one hundred seventy-one thousand, four hundred twenty-four".