1388376 has 48 divisors (see below), whose sum is σ = 4104360. Its totient is φ = 420480.

The previous prime is 1388369. The next prime is 1388381. The reversal of 1388376 is 6738831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1388376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85 + ... + 1668.

2^1388376 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 1388376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052180).

1388376 is an abundant number, since it is smaller than the sum of its proper divisors (2715984).

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

1388376 is a wasteful number, since it uses less digits than its factorization.

1388376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1769 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1388376 is about 1178.2936815582. The cubic root of 1388376 is about 111.5584228673.

It can be divided in two parts, 1388 and 376, that added together give a square (1764 = 42²).

The spelling of 1388376 in words is "one million, three hundred eighty-eight thousand, three hundred seventy-six".