1850004 has 72 divisors (see below), whose sum is σ = 5197920. Its totient is φ = 551232.

The previous prime is 1849979. The next prime is 1850021. The reversal of 1850004 is 4000581.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27579 + ... + 27645.

2^1850004 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 1850004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598960).

1850004 is an abundant number, since it is smaller than the sum of its proper divisors (3347916).

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

1850004 is a wasteful number, since it uses less digits than its factorization.

1850004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1850004 is about 1360.1485213020. The cubic root of 1850004 is about 122.7601910949.

Adding to 1850004 its reverse (4000581), we get a palindrome (5850585).

The spelling of 1850004 in words is "one million, eight hundred fifty thousand, four".