1812132 has 120 divisors (see below), whose sum is σ = 5854464. Its totient is φ = 476928.

The previous prime is 1812131. The next prime is 1812137. The reversal of 1812132 is 2312181.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812131) 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 in 39 ways as a sum of consecutive naturals, for example, 38533 + ... + 38579.

2^1812132 is an apocalyptic number.

1812132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2927232).

1812132 is an abundant number, since it is smaller than the sum of its proper divisors (4042332).

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

1812132 is a wasteful number, since it uses less digits than its factorization.

1812132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1812132 is about 1346.1545230768. The cubic root of 1812132 is about 121.9167218103.

The spelling of 1812132 in words is "one million, eight hundred twelve thousand, one hundred thirty-two".