2381604 has 24 divisors (see below), whose sum is σ = 5799360. Its totient is φ = 759264.

The previous prime is 2381591. The next prime is 2381609. The reversal of 2381604 is 4061832.

It is a happy number.

It is a super-2 number, since 2×2381604² = 11344075225632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2381609) 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, 4039 + ... + 4590.

It is an arithmetic number, because the mean of its divisors is an integer number (241640).

2^2381604 is an apocalyptic number.

It is an amenable number.

2381604 is an abundant number, since it is smaller than the sum of its proper divisors (3417756).

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

2381604 is a wasteful number, since it uses less digits than its factorization.

2381604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2381604 is about 1543.2446338802. The cubic root of 2381604 is about 133.5436320230.

The spelling of 2381604 in words is "two million, three hundred eighty-one thousand, six hundred four".