1338660 has 96 divisors (see below), whose sum is σ = 4341120. Its totient is φ = 342144.

The previous prime is 1338653. The next prime is 1338661. The reversal of 1338660 is 668331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19947 + ... + 20013.

It is an arithmetic number, because the mean of its divisors is an integer number (45220).

2^1338660 is an apocalyptic number.

1338660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1338660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2170560).

1338660 is an abundant number, since it is smaller than the sum of its proper divisors (3002460).

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

1338660 is a wasteful number, since it uses less digits than its factorization.

1338660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1338660 is about 1157.0047536635. The cubic root of 1338660 is about 110.2106157627.

The spelling of 1338660 in words is "one million, three hundred thirty-eight thousand, six hundred sixty".