1380744 has 48 divisors (see below), whose sum is σ = 3793920. Its totient is φ = 453600.

The previous prime is 1380727. The next prime is 1380763. The reversal of 1380744 is 4470831.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 9069 + ... + 9219.

It is an arithmetic number, because the mean of its divisors is an integer number (79040).

2^1380744 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 1380744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1896960).

1380744 is an abundant number, since it is smaller than the sum of its proper divisors (2413176).

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

1380744 is a wasteful number, since it uses less digits than its factorization.

1380744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1380744 is about 1175.0506372068. The cubic root of 1380744 is about 111.3536323400.

The spelling of 1380744 in words is "one million, three hundred eighty thousand, seven hundred forty-four".