1103648 has 48 divisors (see below), whose sum is σ = 2681280. Its totient is φ = 435456.

The previous prime is 1103639. The next prime is 1103699. The reversal of 1103648 is 8463011.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2723 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2^1103648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340640).

1103648 is an abundant number, since it is smaller than the sum of its proper divisors (1577632).

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

1103648 is a wasteful number, since it uses less digits than its factorization.

1103648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1103648 is about 1050.5465244338. The cubic root of 1103648 is about 103.3419995044.

Adding to 1103648 its reverse (8463011), we get a palindrome (9566659).

The spelling of 1103648 in words is "one million, one hundred three thousand, six hundred forty-eight".