1328406 has 8 divisors (see below), whose sum is σ = 2656824. Its totient is φ = 442800.

The previous prime is 1328387. The next prime is 1328407. The reversal of 1328406 is 6048231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1328406 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328407) 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, 110695 + ... + 110706.

It is an arithmetic number, because the mean of its divisors is an integer number (332103).

2^1328406 is an apocalyptic number.

1328406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1328406 is a wasteful number, since it uses less digits than its factorization.

1328406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221406.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1328406 is about 1152.5649656310. The cubic root of 1328406 is about 109.9284934715.

The spelling of 1328406 in words is "one million, three hundred twenty-eight thousand, four hundred six".