1338340 has 24 divisors (see below), whose sum is σ = 2859192. Its totient is φ = 526080.

The previous prime is 1338331. The next prime is 1338343. The reversal of 1338340 is 438331.

It can be written as a sum of positive squares in 4 ways, for example, as 11236 + 1327104 = 106^2 + 1152^2 .

It is not an unprimeable number, because it can be changed into a prime (1338343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (119133).

2^1338340 is an apocalyptic number.

1338340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338340 is an abundant number, since it is smaller than the sum of its proper divisors (1520852).

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

1338340 is a wasteful number, since it uses less digits than its factorization.

1338340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1338340 is about 1156.8664572888. The cubic root of 1338340 is about 110.2018332968.

Subtracting from 1338340 its reverse (438331), we obtain a palindrome (900009).

The spelling of 1338340 in words is "one million, three hundred thirty-eight thousand, three hundred forty".