1810004 has 24 divisors (see below), whose sum is σ = 3655680. Its totient is φ = 768096.

The previous prime is 1810001. The next prime is 1810013. The reversal of 1810004 is 4000181.

It is a happy number.

It is a super-2 number, since 2×1810004² = 6552228960032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3302 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (152320).

2^1810004 is an apocalyptic number.

1810004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1810004 is an abundant number, since it is smaller than the sum of its proper divisors (1845676).

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

1810004 is a wasteful number, since it uses less digits than its factorization.

1810004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1810004 is about 1345.3638912948. The cubic root of 1810004 is about 121.8689805486.

1810004 divided by its sum of digits (14) gives a triangular number (129286 = T₅₀₈).

Adding to 1810004 its reverse (4000181), we get a palindrome (5810185).

The spelling of 1810004 in words is "one million, eight hundred ten thousand, four".