1105380 has 96 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 278784.

The previous prime is 1105343. The next prime is 1105387. The reversal of 1105380 is 835011.

1105380 = T₁₁₁ + T₁₁₂ + ... + T₁₉₉.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12376 + ... + 12464.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2^1105380 is an apocalyptic number.

1105380 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 1105380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1105380 is an abundant number, since it is smaller than the sum of its proper divisors (2523420).

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

1105380 is a wasteful number, since it uses less digits than its factorization.

1105380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1105380 is about 1051.3705341125. The cubic root of 1105380 is about 103.3960308603.

It can be divided in two parts, 1105 and 380, that added together give a triangular number (1485 = T₅₄).

The spelling of 1105380 in words is "one million, one hundred five thousand, three hundred eighty".