1821152 has 12 divisors (see below), whose sum is σ = 3585456. Its totient is φ = 910560.

The previous prime is 1821151. The next prime is 1821167. The reversal of 1821152 is 2511281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821151) by changing a digit.

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 as a sum of consecutive naturals, namely, 28424 + ... + 28487.

It is an arithmetic number, because the mean of its divisors is an integer number (298788).

2^1821152 is an apocalyptic number.

It is an amenable number.

1821152 is a deficient number, since it is larger than the sum of its proper divisors (1764304).

1821152 is an equidigital number, since it uses as much as digits as its factorization.

1821152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56921 (or 56913 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 1821152 is about 1349.5006483881. The cubic root of 1821152 is about 122.1186698048.

The spelling of 1821152 in words is "one million, eight hundred twenty-one thousand, one hundred fifty-two".