1104640 has 36 divisors (see below), whose sum is σ = 2649024. Its totient is φ = 441344.

The previous prime is 1104619. The next prime is 1104659. The reversal of 1104640 is 464011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (73584).

2^1104640 is an apocalyptic number.

1104640 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 1104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324512).

1104640 is an abundant number, since it is smaller than the sum of its proper divisors (1544384).

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

1104640 is an frugal number, since it uses more digits than its factorization.

1104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1104640 is about 1051.0185535946. The cubic root of 1104640 is about 103.3729527806.

Adding to 1104640 its reverse (464011), we get a palindrome (1568651).

The spelling of 1104640 in words is "one million, one hundred four thousand, six hundred forty".