1388752 has 40 divisors (see below), whose sum is σ = 2890440. Its totient is φ = 645120.

The previous prime is 1388743. The next prime is 1388773. The reversal of 1388752 is 2578831.

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 1354896 = 184^2 + 1164^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18988 + ... + 19060.

It is an arithmetic number, because the mean of its divisors is an integer number (72261).

2^1388752 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 1388752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1445220).

1388752 is an abundant number, since it is smaller than the sum of its proper divisors (1501688).

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

1388752 is a wasteful number, since it uses less digits than its factorization.

1388752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 145 counting only the distinct ones).

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

The square root of 1388752 is about 1178.4532235095. The cubic root of 1388752 is about 111.5684927093.

The spelling of 1388752 in words is "one million, three hundred eighty-eight thousand, seven hundred fifty-two".