1291048 has 32 divisors (see below), whose sum is σ = 2799360. Its totient is φ = 551680.

The previous prime is 1291021. The next prime is 1291063. The reversal of 1291048 is 8401921.

It is a happy 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, 1065 + ... + 1927.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2^1291048 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 1291048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399680).

1291048 is an abundant number, since it is smaller than the sum of its proper divisors (1508312).

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

1291048 is a wasteful number, since it uses less digits than its factorization.

1291048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1291048 is about 1136.2429317712. The cubic root of 1291048 is about 108.8881944207. Note that the first 3 decimals are identical.

Adding to 1291048 its reverse (8401921), we get a palindrome (9692969).

The spelling of 1291048 in words is "one million, two hundred ninety-one thousand, forty-eight".