1315648 has 28 divisors (see below), whose sum is σ = 2661412. Its totient is φ = 645120.

The previous prime is 1315637. The next prime is 1315651. The reversal of 1315648 is 8465131.

It can be written as a sum of positive squares in 2 ways, for example, as 166464 + 1149184 = 408^2 + 1072^2 .

It is a super-3 number, since 3×1315648³ = 6831882435580133376, which contains 333 as substring.

It is a congruent number.

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, 3736 + ... + 4072.

2^1315648 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 1315648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330706).

1315648 is an abundant number, since it is smaller than the sum of its proper divisors (1345764).

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

1315648 is an equidigital number, since it uses as much as digits as its factorization.

1315648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 400 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 1315648 is about 1147.0170007458. The cubic root of 1315648 is about 109.5754433768.

The spelling of 1315648 in words is "one million, three hundred fifteen thousand, six hundred forty-eight".