1104820 has 24 divisors (see below), whose sum is σ = 2384424. Its totient is φ = 429696.

The previous prime is 1104811. The next prime is 1104821. The reversal of 1104820 is 284011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 524176 + 580644 = 724^2 + 762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1104794 and 1104803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1104821) 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 7 ways as a sum of consecutive naturals, for example, 7 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (99351).

2^1104820 is an apocalyptic number.

1104820 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 1104820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192212).

1104820 is an abundant number, since it is smaller than the sum of its proper divisors (1279604).

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

1104820 is a wasteful number, since it uses less digits than its factorization.

1104820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1104820 is about 1051.1041813255. The cubic root of 1104820 is about 103.3785673159.

Adding to 1104820 its reverse (284011), we get a palindrome (1388831).

The spelling of 1104820 in words is "one million, one hundred four thousand, eight hundred twenty".