1338885 has 12 divisors (see below), whose sum is σ = 2320812. Its totient is φ = 714048.

The previous prime is 1338881. The next prime is 1338907. The reversal of 1338885 is 5888331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 352836 = 993^2 + 594^2 .

It is not a de Polignac number, because 1338885 - 2² = 1338881 is a prime.

It is a super-2 number, since 2×1338885² = 3585226086450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14832 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (193401).

2^1338885 is an apocalyptic number.

1338885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1338885 is a deficient number, since it is larger than the sum of its proper divisors (981927).

1338885 is a wasteful number, since it uses less digits than its factorization.

1338885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29764 (or 29761 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1338885 is about 1157.1019834051. The cubic root of 1338885 is about 110.2167900961.

It can be divided in two parts, 13 and 38885, that multiplied together give a palindrome (505505).

The spelling of 1338885 in words is "one million, three hundred thirty-eight thousand, eight hundred eighty-five".