2381830 has 32 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 849120.

The previous prime is 2381807. The next prime is 2381839. The reversal of 2381830 is 381832.

It is a super-2 number, since 2×2381830² = 11346228297800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2381795 and 2381804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6307 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (149040).

2^2381830 is an apocalyptic number.

2381830 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

2381830 is a wasteful number, since it uses less digits than its factorization.

2381830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2381830 is about 1543.3178544940. The cubic root of 2381830 is about 133.5478560538.

The spelling of 2381830 in words is "two million, three hundred eighty-one thousand, eight hundred thirty".