9820988 has 12 divisors (see below), whose sum is σ = 17260320. Its totient is φ = 4889472.

The previous prime is 9820969. The next prime is 9820997. The reversal of 9820988 is 8890289.

It is a super-2 number, since 2×9820988² = 192903610592288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4181 + ... + 6092.

It is an arithmetic number, because the mean of its divisors is an integer number (1438360).

Almost surely, 2^9820988 is an apocalyptic number.

It is an amenable number.

9820988 is a deficient number, since it is larger than the sum of its proper divisors (7439332).

9820988 is a wasteful number, since it uses less digits than its factorization.

9820988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10516 (or 10514 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 9820988 is about 3133.8455609682. The cubic root of 9820988 is about 214.1501551934.

The spelling of 9820988 in words is "nine million, eight hundred twenty thousand, nine hundred eighty-eight".