1105820 has 12 divisors (see below), whose sum is σ = 2322264. Its totient is φ = 442320.

The previous prime is 1105813. The next prime is 1105823. The reversal of 1105820 is 285011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27626 + ... + 27665.

It is an arithmetic number, because the mean of its divisors is an integer number (193522).

2^1105820 is an apocalyptic number.

1105820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1105820 is an abundant number, since it is smaller than the sum of its proper divisors (1216444).

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

1105820 is a wasteful number, since it uses less digits than its factorization.

1105820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55300 (or 55298 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1105820 is about 1051.5797639742. The cubic root of 1105820 is about 103.4097480792.

The spelling of 1105820 in words is "one million, one hundred five thousand, eight hundred twenty".