1812300 has 72 divisors (see below), whose sum is σ = 5999616. Its totient is φ = 413760.

The previous prime is 1812271. The next prime is 1812301. The reversal of 1812300 is 32181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1812300.

It is not an unprimeable number, because it can be changed into a prime (1812301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1669 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (83328).

2^1812300 is an apocalyptic number.

1812300 is a gapful number since it is divisible by the number (10) 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 1812300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2999808).

1812300 is an abundant number, since it is smaller than the sum of its proper divisors (4187316).

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

1812300 is a wasteful number, since it uses less digits than its factorization.

1812300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1812300 is about 1346.2169215992. The cubic root of 1812300 is about 121.9204892651.

Adding to 1812300 its reverse (32181), we get a palindrome (1844481).

It can be divided in two parts, 1812 and 300, that added together give a palindrome (2112).

The spelling of 1812300 in words is "one million, eight hundred twelve thousand, three hundred".