2181332 has 12 divisors (see below), whose sum is σ = 3829056. Its totient is φ = 1087320.

The previous prime is 2181331. The next prime is 2181337. The reversal of 2181332 is 2331812.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181331) 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, 1157 + ... + 2387.

It is an arithmetic number, because the mean of its divisors is an integer number (319088).

2^2181332 is an apocalyptic number.

It is an amenable number.

2181332 is a deficient number, since it is larger than the sum of its proper divisors (1647724).

2181332 is a wasteful number, since it uses less digits than its factorization.

2181332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1676 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 2181332 is about 1476.9333092594. The cubic root of 2181332 is about 129.6902289163.

The spelling of 2181332 in words is "two million, one hundred eighty-one thousand, three hundred thirty-two".