1338444 has 60 divisors (see below), whose sum is σ = 3720024. Its totient is φ = 419904.

The previous prime is 1338443. The next prime is 1338451. The reversal of 1338444 is 4448331.

It is a super-2 number, since 2×1338444² = 3582864682272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (4608) is a multiple of the sum of its prime factors (48).

It is not an unprimeable number, because it can be changed into a prime (1338443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78724 + ... + 78740.

2^1338444 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 1338444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860012).

1338444 is an abundant number, since it is smaller than the sum of its proper divisors (2381580).

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

1338444 is an frugal number, since it uses more digits than its factorization.

1338444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 22 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1338444 is about 1156.9114054239. The cubic root of 1338444 is about 110.2046877518.

The spelling of 1338444 in words is "one million, three hundred thirty-eight thousand, four hundred forty-four".