2187224 has 16 divisors (see below), whose sum is σ = 4416720. Its totient is φ = 1009440.

The previous prime is 2187217. The next prime is 2187233. The reversal of 2187224 is 4227812.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 2187193 and 2187202.

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, 10412 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (276045).

2^2187224 is an apocalyptic number.

It is an amenable number.

2187224 is an abundant number, since it is smaller than the sum of its proper divisors (2229496).

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

2187224 is a wasteful number, since it uses less digits than its factorization.

2187224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21050 (or 21046 counting only the distinct ones).

The product of its digits is 1792, while the sum is 26.

The square root of 2187224 is about 1478.9266378019. The cubic root of 2187224 is about 129.8068927800.

The spelling of 2187224 in words is "two million, one hundred eighty-seven thousand, two hundred twenty-four".