1328634 has 24 divisors (see below), whose sum is σ = 2900352. Its totient is φ = 439560.

The previous prime is 1328617. The next prime is 1328647. The reversal of 1328634 is 4368231.

It is a happy number.

1328634 is a `hidden beast` number, since 1 + 3 + 28 + 634 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1328598 and 1328607.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3849 + ... + 4179.

It is an arithmetic number, because the mean of its divisors is an integer number (120848).

2^1328634 is an apocalyptic number.

1328634 is an abundant number, since it is smaller than the sum of its proper divisors (1571718).

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

1328634 is a wasteful number, since it uses less digits than its factorization.

1328634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1328634 is about 1152.6638712131. The cubic root of 1328634 is about 109.9347822775.

The spelling of 1328634 in words is "one million, three hundred twenty-eight thousand, six hundred thirty-four".