9803820 has 48 divisors (see below), whose sum is σ = 29564640. Its totient is φ = 2413056.

The previous prime is 9803813. The next prime is 9803863. The reversal of 9803820 is 283089.

It is a super-2 number, since 2×9803820² = 192229773184800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5505 + ... + 7064.

It is an arithmetic number, because the mean of its divisors is an integer number (615930).

Almost surely, 2^9803820 is an apocalyptic number.

It is an amenable number.

9803820 is an abundant number, since it is smaller than the sum of its proper divisors (19760820).

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

9803820 is a wasteful number, since it uses less digits than its factorization.

9803820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594 (or 12592 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 9803820 is about 3131.1052361746. The cubic root of 9803820 is about 214.0252976179.

The spelling of 9803820 in words is "nine million, eight hundred three thousand, eight hundred twenty".