1155648 has 56 divisors (see below), whose sum is σ = 3299968. Its totient is φ = 354816.

The previous prime is 1155631. The next prime is 1155653. The reversal of 1155648 is 8465511.

It is a nialpdrome in base 8.

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, 2265 + ... + 2727.

It is an arithmetic number, because the mean of its divisors is an integer number (58928).

2^1155648 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 1155648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649984).

1155648 is an abundant number, since it is smaller than the sum of its proper divisors (2144320).

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

1155648 is a wasteful number, since it uses less digits than its factorization.

1155648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 481 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 1155648 is about 1075.0106976212. The cubic root of 1155648 is about 104.9401926980.

The spelling of 1155648 in words is "one million, one hundred fifty-five thousand, six hundred forty-eight".