1380144 has 20 divisors (see below), whose sum is σ = 3565496. Its totient is φ = 460032.

The previous prime is 1380083. The next prime is 1380149. The reversal of 1380144 is 4410831.

It is a self number, because there is not a number n which added to its sum of digits gives 1380144.

It is not an unprimeable number, because it can be changed into a prime (1380149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14329 + ... + 14424.

2^1380144 is an apocalyptic number.

It is an amenable number.

1380144 is an abundant number, since it is smaller than the sum of its proper divisors (2185352).

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

1380144 is a wasteful number, since it uses less digits than its factorization.

1380144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28764 (or 28758 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1380144 is about 1174.7953013185. The cubic root of 1380144 is about 111.3375004914.

Adding to 1380144 its reverse (4410831), we get a palindrome (5790975).

The spelling of 1380144 in words is "one million, three hundred eighty thousand, one hundred forty-four".