2381504 has 28 divisors (see below), whose sum is σ = 4779264. Its totient is φ = 1177344.

The previous prime is 2381503. The next prime is 2381507. The reversal of 2381504 is 4051832.

2381504 is an admirable number.

It is a super-2 number, since 2×2381504² = 11343122604032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2381504.

It is not an unprimeable number, because it can be changed into a prime (2381503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7982 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (170688).

2^2381504 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 2381504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2389632).

2381504 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2381504 is a wasteful number, since it uses less digits than its factorization.

2381504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2381504 is about 1543.2122342698. The cubic root of 2381504 is about 133.5417628975.

The spelling of 2381504 in words is "two million, three hundred eighty-one thousand, five hundred four".