1812704 has 24 divisors (see below), whose sum is σ = 3667608. Its totient is φ = 881280.

The previous prime is 1812689. The next prime is 1812721. The reversal of 1812704 is 4072181.

It is a self number, because there is not a number n which added to its sum of digits gives 1812704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (152817).

2^1812704 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 1812704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1833804).

1812704 is an abundant number, since it is smaller than the sum of its proper divisors (1854904).

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

1812704 is a wasteful number, since it uses less digits than its factorization.

1812704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1812704 is about 1346.3669633499. The cubic root of 1812704 is about 121.9295481439.

Adding to 1812704 its reverse (4072181), we get a palindrome (5884885).

The spelling of 1812704 in words is "one million, eight hundred twelve thousand, seven hundred four".