1380740 has 48 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 499200.

The previous prime is 1380727. The next prime is 1380763. The reversal of 1380740 is 470831.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 10475 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (66528).

2^1380740 is an apocalyptic number.

1380740 is a gapful number since it is divisible by the number (10) 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 1380740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596672).

1380740 is an abundant number, since it is smaller than the sum of its proper divisors (1812604).

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

1380740 is a wasteful number, since it uses less digits than its factorization.

1380740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1380740 is about 1175.0489351512. The cubic root of 1380740 is about 111.3535248098.

Subtracting from 1380740 its reverse (470831), we obtain a palindrome (909909).

The spelling of 1380740 in words is "one million, three hundred eighty thousand, seven hundred forty".