1821952 has 36 divisors (see below), whose sum is σ = 3973536. Its totient is φ = 826880.

The previous prime is 1821943. The next prime is 1821959. The reversal of 1821952 is 2591281.

It is a self number, because there is not a number n which added to its sum of digits gives 1821952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821959) 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, 2493 + ... + 3139.

It is an arithmetic number, because the mean of its divisors is an integer number (110376).

2^1821952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1821952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986768).

1821952 is an abundant number, since it is smaller than the sum of its proper divisors (2151584).

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

1821952 is an equidigital number, since it uses as much as digits as its factorization.

1821952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 660 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1821952 is about 1349.7970217777. The cubic root of 1821952 is about 122.1365487141.

The spelling of 1821952 in words is "one million, eight hundred twenty-one thousand, nine hundred fifty-two".