1381448 has 8 divisors (see below), whose sum is σ = 2590230. Its totient is φ = 690720.

The previous prime is 1381441. The next prime is 1381451. The reversal of 1381448 is 8441831.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 77284 = 1142^2 + 278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1381448.

It is not an unprimeable number, because it can be changed into a prime (1381441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86333 + ... + 86348.

2^1381448 is an apocalyptic number.

It is an amenable number.

1381448 is a deficient number, since it is larger than the sum of its proper divisors (1208782).

1381448 is a wasteful number, since it uses less digits than its factorization.

1381448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172687 (or 172683 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 1381448 is about 1175.3501605905. The cubic root of 1381448 is about 111.3725544181.

The spelling of 1381448 in words is "one million, three hundred eighty-one thousand, four hundred forty-eight".