10998820 has 48 divisors (see below), whose sum is σ = 26587008. Its totient is φ = 3744000.

The previous prime is 10998811. The next prime is 10998833. The reversal of 10998820 is 2889901.

It is a self number, because there is not a number n which added to its sum of digits gives 10998820.

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 15 ways as a sum of consecutive naturals, for example, 34984 + ... + 35296.

It is an arithmetic number, because the mean of its divisors is an integer number (553896).

Almost surely, 2^10998820 is an apocalyptic number.

10998820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10998820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13293504).

10998820 is an abundant number, since it is smaller than the sum of its proper divisors (15588188).

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

10998820 is a wasteful number, since it uses less digits than its factorization.

10998820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 10998820 is about 3316.4468938911. The cubic root of 10998820 is about 222.3900563589.

The spelling of 10998820 in words is "ten million, nine hundred ninety-eight thousand, eight hundred twenty".