1388608 has 28 divisors (see below), whose sum is σ = 2969260. Its totient is φ = 640512.

The previous prime is 1388603. The next prime is 1388623. The reversal of 1388608 is 8068831.

It can be written as a sum of positive squares in 2 ways, for example, as 451584 + 937024 = 672^2 + 968^2 .

It is not an unprimeable number, because it can be changed into a prime (1388603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3 + ... + 1666.

It is an arithmetic number, because the mean of its divisors is an integer number (106045).

2^1388608 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 1388608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484630).

1388608 is an abundant number, since it is smaller than the sum of its proper divisors (1580652).

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

1388608 is a wasteful number, since it uses less digits than its factorization.

1388608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1388608 is about 1178.3921248888. The cubic root of 1388608 is about 111.5646363888.

The spelling of 1388608 in words is "one million, three hundred eighty-eight thousand, six hundred eight".