2098728 has 48 divisors (see below), whose sum is σ = 5759520. Its totient is φ = 690336.

The previous prime is 2098717. The next prime is 2098729. The reversal of 2098728 is 8278902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁰ + 0 + 9² + 8² + 7³ + 2²¹ + 8² .

It is a junction number, because it is equal to n+sod(n) for n = 2098692 and 2098701.

It is not an unprimeable number, because it can be changed into a prime (2098729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7275 + ... + 7557.

It is an arithmetic number, because the mean of its divisors is an integer number (119990).

2^2098728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2098728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2879760).

2098728 is an abundant number, since it is smaller than the sum of its proper divisors (3660792).

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

2098728 is a wasteful number, since it uses less digits than its factorization.

2098728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2098728 is about 1448.6987264438. The cubic root of 2098728 is about 128.0320557735.

The spelling of 2098728 in words is "two million, ninety-eight thousand, seven hundred twenty-eight".