1100380 has 24 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 427968.

The previous prime is 1100377. The next prime is 1100381. The reversal of 1100380 is 830011.

It is a super-2 number, since 2×1100380² = 2421672288800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1100380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4 + ... + 1483.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2^1100380 is an apocalyptic number.

1100380 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 1100380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187424).

1100380 is an abundant number, since it is smaller than the sum of its proper divisors (1274468).

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

1100380 is a wasteful number, since it uses less digits than its factorization.

1100380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1100380 is about 1048.9899904194. The cubic root of 1100380 is about 103.2398970390.

Adding to 1100380 its reverse (830011), we get a palindrome (1930391).

The spelling of 1100380 in words is "one million, one hundred thousand, three hundred eighty".