1098380 has 12 divisors (see below), whose sum is σ = 2306640. Its totient is φ = 439344.

The previous prime is 1098379. The next prime is 1098397. The reversal of 1098380 is 838901.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27440 + ... + 27479.

It is an arithmetic number, because the mean of its divisors is an integer number (192220).

2^1098380 is an apocalyptic number.

1098380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098380 is an abundant number, since it is smaller than the sum of its proper divisors (1208260).

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

1098380 is a wasteful number, since it uses less digits than its factorization.

1098380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54928 (or 54926 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1098380 is about 1048.0362589147. The cubic root of 1098380 is about 103.1773110789.

The spelling of 1098380 in words is "one million, ninety-eight thousand, three hundred eighty".