1387285 has 16 divisors (see below), whose sum is σ = 1857600. Its totient is φ = 988416.

The previous prime is 1387271. The next prime is 1387289. The reversal of 1387285 is 5827831.

It is a cyclic number.

It is not a de Polignac number, because 1387285 - 2⁹ = 1386773 is a prime.

1387285 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1387285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1186 + ... + 2044.

It is an arithmetic number, because the mean of its divisors is an integer number (116100).

2^1387285 is an apocalyptic number.

It is an amenable number.

1387285 is a deficient number, since it is larger than the sum of its proper divisors (470315).

1387285 is a wasteful number, since it uses less digits than its factorization.

1387285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its digits is 13440, while the sum is 34.

The square root of 1387285 is about 1177.8306329859. The cubic root of 1387285 is about 111.5291939615.

The spelling of 1387285 in words is "one million, three hundred eighty-seven thousand, two hundred eighty-five".