1386256 has 20 divisors (see below), whose sum is σ = 2803392. Its totient is φ = 662816.

The previous prime is 1386239. The next prime is 1386263. The reversal of 1386256 is 6526831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516 + ... + 2251.

2^1386256 is an apocalyptic number.

1386256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1386256 is an abundant number, since it is smaller than the sum of its proper divisors (1417136).

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

1386256 is a wasteful number, since it uses less digits than its factorization.

1386256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798 (or 3792 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1386256 is about 1177.3937319351. The cubic root of 1386256 is about 111.5016120475.

The spelling of 1386256 in words is "one million, three hundred eighty-six thousand, two hundred fifty-six".