5815820 has 12 divisors (see below), whose sum is σ = 12213264. Its totient is φ = 2326320.

The previous prime is 5815813. The next prime is 5815847. The reversal of 5815820 is 285185.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145376 + ... + 145415.

It is an arithmetic number, because the mean of its divisors is an integer number (1017772).

Almost surely, 2^5815820 is an apocalyptic number.

It is an amenable number.

5815820 is an abundant number, since it is smaller than the sum of its proper divisors (6397444).

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

5815820 is a wasteful number, since it uses less digits than its factorization.

5815820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290800 (or 290798 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 5815820 is about 2411.6011278816. The cubic root of 5815820 is about 179.8333849168.

The spelling of 5815820 in words is "five million, eight hundred fifteen thousand, eight hundred twenty".