1289634 has 8 divisors (see below), whose sum is σ = 2579280. Its totient is φ = 429876.

The previous prime is 1289627. The next prime is 1289653. The reversal of 1289634 is 4369821.

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

1289634 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1289595 and 1289604.

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 3 ways as a sum of consecutive naturals, for example, 107464 + ... + 107475.

It is an arithmetic number, because the mean of its divisors is an integer number (322410).

2^1289634 is an apocalyptic number.

1289634 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.

1289634 is a wasteful number, since it uses less digits than its factorization.

1289634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214944.

The product of its digits is 10368, while the sum is 33.

The square root of 1289634 is about 1135.6205352141. The cubic root of 1289634 is about 108.8484272054.

The spelling of 1289634 in words is "one million, two hundred eighty-nine thousand, six hundred thirty-four".