1388622 has 16 divisors (see below), whose sum is σ = 2793600. Its totient is φ = 460152.

The previous prime is 1388603. The next prime is 1388623. The reversal of 1388622 is 2268831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613 + ... + 1775.

It is an arithmetic number, because the mean of its divisors is an integer number (174600).

2^1388622 is an apocalyptic number.

1388622 is an abundant number, since it is smaller than the sum of its proper divisors (1404978).

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

1388622 is a wasteful number, since it uses less digits than its factorization.

1388622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367.

The product of its digits is 4608, while the sum is 30.

The square root of 1388622 is about 1178.3980651715. The cubic root of 1388622 is about 111.5650113206.

The spelling of 1388622 in words is "one million, three hundred eighty-eight thousand, six hundred twenty-two".