1098378 has 24 divisors (see below), whose sum is σ = 2402400. Its totient is φ = 362664.

The previous prime is 1098373. The next prime is 1098379. The reversal of 1098378 is 8738901.

It is not an unprimeable number, because it can be changed into a prime (1098373) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2283 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (100100).

2^1098378 is an apocalyptic number.

1098378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1098378 is an abundant number, since it is smaller than the sum of its proper divisors (1304022).

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

1098378 is a wasteful number, since it uses less digits than its factorization.

1098378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1098378 is about 1048.0353047488. The cubic root of 1098378 is about 103.1772484549.

The spelling of 1098378 in words is "one million, ninety-eight thousand, three hundred seventy-eight".