1380285 has 24 divisors (see below), whose sum is σ = 2460120. Its totient is φ = 715392.

The previous prime is 1380283. The next prime is 1380289. The reversal of 1380285 is 5820831.

It is a happy number.

1380285 is a `hidden beast` number, since 1 + 380 + 285 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 423801 + 956484 = 651^2 + 978^2 .

It is not a de Polignac number, because 1380285 - 2¹ = 1380283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1251 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (102505).

2^1380285 is an apocalyptic number.

1380285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1380285 is a deficient number, since it is larger than the sum of its proper divisors (1079835).

1380285 is a wasteful number, since it uses less digits than its factorization.

1380285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1380285 is about 1174.8553102404. The cubic root of 1380285 is about 111.3412918960.

The spelling of 1380285 in words is "one million, three hundred eighty thousand, two hundred eighty-five".