1098306 has 48 divisors (see below), whose sum is σ = 2725920. Its totient is φ = 325080.

The previous prime is 1098301. The next prime is 1098311. The reversal of 1098306 is 6038901.

It is an interprime number because it is at equal distance from previous prime (1098301) and next prime (1098311).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098306.

It is not an unprimeable number, because it can be changed into a prime (1098301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25521 + ... + 25563.

It is an arithmetic number, because the mean of its divisors is an integer number (56790).

2^1098306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362960).

1098306 is an abundant number, since it is smaller than the sum of its proper divisors (1627614).

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

1098306 is a wasteful number, since it uses less digits than its factorization.

1098306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1098306 is about 1048.0009541980. Note that the first 3 decimals coincide. The cubic root of 1098306 is about 103.1749939414.

The spelling of 1098306 in words is "one million, ninety-eight thousand, three hundred six".