5981820 has 48 divisors (see below), whose sum is σ = 18039840. Its totient is φ = 1472256.

The previous prime is 5981819. The next prime is 5981851. The reversal of 5981820 is 281895.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3055 + ... + 4614.

It is an arithmetic number, because the mean of its divisors is an integer number (375830).

Almost surely, 2^5981820 is an apocalyptic number.

It is an amenable number.

5981820 is an abundant number, since it is smaller than the sum of its proper divisors (12058020).

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

5981820 is a wasteful number, since it uses less digits than its factorization.

5981820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694 (or 7692 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 5981820 is about 2445.7759504910. The cubic root of 5981820 is about 181.5283444262.

The spelling of 5981820 in words is "five million, nine hundred eighty-one thousand, eight hundred twenty".