1098140 has 12 divisors (see below), whose sum is σ = 2306136. Its totient is φ = 439248.

The previous prime is 1098133. The next prime is 1098151. The reversal of 1098140 is 418901.

It is a super-2 number, since 2×1098140² = 2411822919200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27434 + ... + 27473.

It is an arithmetic number, because the mean of its divisors is an integer number (192178).

2^1098140 is an apocalyptic number.

1098140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098140 is an abundant number, since it is smaller than the sum of its proper divisors (1207996).

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

1098140 is a wasteful number, since it uses less digits than its factorization.

1098140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54916 (or 54914 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1098140 is about 1047.9217528041. The cubic root of 1098140 is about 103.1697956597.

The spelling of 1098140 in words is "one million, ninety-eight thousand, one hundred forty".