1391248 has 20 divisors (see below), whose sum is σ = 2728620. Its totient is φ = 687104.

The previous prime is 1391239. The next prime is 1391261. The reversal of 1391248 is 8421931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 559504 = 912^2 + 748^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (136431).

2^1391248 is an apocalyptic number.

It is an amenable number.

1391248 is a deficient number, since it is larger than the sum of its proper divisors (1337372).

1391248 is an equidigital number, since it uses as much as digits as its factorization.

1391248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1068 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 1391248 is about 1179.5117634004. The cubic root of 1391248 is about 111.6352932828.

The spelling of 1391248 in words is "one million, three hundred ninety-one thousand, two hundred forty-eight".