1821852 has 30 divisors (see below), whose sum is σ = 4763528. Its totient is φ = 607176.

The previous prime is 1821847. The next prime is 1821857. The reversal of 1821852 is 2581281.

It is an interprime number because it is at equal distance from previous prime (1821847) and next prime (1821857).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821857) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2488 + ... + 3135.

2^1821852 is an apocalyptic number.

1821852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1821852 is an abundant number, since it is smaller than the sum of its proper divisors (2941676).

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

1821852 is a wasteful number, since it uses less digits than its factorization.

1821852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639 (or 5628 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1821852 is about 1349.7599786629. The cubic root of 1821852 is about 122.1343141367.

1821852 divided by its sum of digits (27) gives a palindrome (67476).

The spelling of 1821852 in words is "one million, eight hundred twenty-one thousand, eight hundred fifty-two".