2181274 has 8 divisors (see below), whose sum is σ = 3414240. Its totient is φ = 1043196.

The previous prime is 2181271. The next prime is 2181329. The reversal of 2181274 is 4721812.

It is a happy number.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23664 + ... + 23755.

It is an arithmetic number, because the mean of its divisors is an integer number (426780).

2^2181274 is an apocalyptic number.

2181274 is a deficient number, since it is larger than the sum of its proper divisors (1232966).

2181274 is a wasteful number, since it uses less digits than its factorization.

2181274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47444.

The product of its digits is 896, while the sum is 25.

The square root of 2181274 is about 1476.9136738483. The cubic root of 2181274 is about 129.6890794504.

The spelling of 2181274 in words is "two million, one hundred eighty-one thousand, two hundred seventy-four".