1338656 has 24 divisors (see below), whose sum is σ = 2875824. Its totient is φ = 608320.

The previous prime is 1338653. The next prime is 1338661. The reversal of 1338656 is 6568331.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1338653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (119826).

2^1338656 is an apocalyptic number.

1338656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1338656 is an abundant number, since it is smaller than the sum of its proper divisors (1537168).

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

1338656 is a wasteful number, since it uses less digits than its factorization.

1338656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824 (or 3816 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 1338656 is about 1157.0030250609. The cubic root of 1338656 is about 110.2105059906.

The spelling of 1338656 in words is "one million, three hundred thirty-eight thousand, six hundred fifty-six".