1328736 has 24 divisors (see below), whose sum is σ = 3488184. Its totient is φ = 442880.

The previous prime is 1328731. The next prime is 1328741. The reversal of 1328736 is 6378231.

It is an interprime number because it is at equal distance from previous prime (1328731) and next prime (1328741).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6825 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (145341).

2^1328736 is an apocalyptic number.

1328736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1328736 is an abundant number, since it is smaller than the sum of its proper divisors (2159448).

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

1328736 is a wasteful number, since it uses less digits than its factorization.

1328736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854 (or 13846 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 1328736 is about 1152.7081156997. The cubic root of 1328736 is about 109.9375954577.

The spelling of 1328736 in words is "one million, three hundred twenty-eight thousand, seven hundred thirty-six".