1331456 has 36 divisors (see below), whose sum is σ = 3041472. Its totient is φ = 569856.

The previous prime is 1331443. The next prime is 1331471. The reversal of 1331456 is 6541331.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421 + ... + 2163.

2^1331456 is an apocalyptic number.

1331456 is a gapful number since it is divisible by the number (16) 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 1331456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520736).

1331456 is an abundant number, since it is smaller than the sum of its proper divisors (1710016).

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

1331456 is an frugal number, since it uses more digits than its factorization.

1331456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 752 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 1331456 is about 1153.8873428546. The cubic root of 1331456 is about 110.0125605492.

Adding to 1331456 its reverse (6541331), we get a palindrome (7872787).

The spelling of 1331456 in words is "one million, three hundred thirty-one thousand, four hundred fifty-six".