2381004 has 54 divisors (see below), whose sum is σ = 6444620. Its totient is φ = 739152.

The previous prime is 2380997. The next prime is 2381011. The reversal of 2381004 is 4001832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2380997) and next prime (2381011).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 40327 + ... + 40385.

2^2381004 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 2381004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3222310).

2381004 is an abundant number, since it is smaller than the sum of its proper divisors (4063616).

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

2381004 is a wasteful number, since it uses less digits than its factorization.

2381004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2381004 is about 1543.0502260134. The cubic root of 2381004 is about 133.5324164852.

Adding to 2381004 its reverse (4001832), we get a palindrome (6382836).

The spelling of 2381004 in words is "two million, three hundred eighty-one thousand, four".