1098100 has 36 divisors (see below), whose sum is σ = 2430400. Its totient is φ = 430560.

The previous prime is 1098077. The next prime is 1098101. The reversal of 1098100 is 18901.

It is a super-2 number, since 2×1098100² = 2411647220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7831 + ... + 7969.

2^1098100 is an apocalyptic number.

1098100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215200).

1098100 is an abundant number, since it is smaller than the sum of its proper divisors (1332300).

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

1098100 is a wasteful number, since it uses less digits than its factorization.

1098100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1098100 is about 1047.9026672358. The cubic root of 1098100 is about 103.1685429833.

The spelling of 1098100 in words is "one million, ninety-eight thousand, one hundred".