1388856 has 48 divisors (see below), whose sum is σ = 4042440. Its totient is φ = 396480.

The previous prime is 1388837. The next prime is 1388873. The reversal of 1388856 is 6588831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586 + ... + 1766.

2^1388856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1388856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021220).

1388856 is an abundant number, since it is smaller than the sum of its proper divisors (2653584).

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

1388856 is a wasteful number, since it uses less digits than its factorization.

1388856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1193 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 1388856 is about 1178.4973483212. The cubic root of 1388856 is about 111.5712776638.

The spelling of 1388856 in words is "one million, three hundred eighty-eight thousand, eight hundred fifty-six".