1381244 has 6 divisors (see below), whose sum is σ = 2417184. Its totient is φ = 690620.

The previous prime is 1381231. The next prime is 1381271. The reversal of 1381244 is 4421831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172652 + ... + 172659.

It is an arithmetic number, because the mean of its divisors is an integer number (402864).

2^1381244 is an apocalyptic number.

It is an amenable number.

1381244 is a deficient number, since it is larger than the sum of its proper divisors (1035940).

1381244 is a wasteful number, since it uses less digits than its factorization.

1381244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345315 (or 345313 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 1381244 is about 1175.2633747378. The cubic root of 1381244 is about 111.3670719776.

The spelling of 1381244 in words is "one million, three hundred eighty-one thousand, two hundred forty-four".