1821452 has 12 divisors (see below), whose sum is σ = 3219216. Its totient is φ = 901680.

The previous prime is 1821433. The next prime is 1821481. The reversal of 1821452 is 2541281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799 + ... + 2622.

It is an arithmetic number, because the mean of its divisors is an integer number (268268).

2^1821452 is an apocalyptic number.

It is an amenable number.

1821452 is a deficient number, since it is larger than the sum of its proper divisors (1397764).

1821452 is a wasteful number, since it uses less digits than its factorization.

1821452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528 (or 4526 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 1821452 is about 1349.6117960362. The cubic root of 1821452 is about 122.1253750093.

The spelling of 1821452 in words is "one million, eight hundred twenty-one thousand, four hundred fifty-two".