1289848 has 32 divisors (see below), whose sum is σ = 2856960. Its totient is φ = 534240.

The previous prime is 1289839. The next prime is 1289851. The reversal of 1289848 is 8489821.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1289848.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1365 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (89280).

2^1289848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1289848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428480).

1289848 is an abundant number, since it is smaller than the sum of its proper divisors (1567112).

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

1289848 is a wasteful number, since it uses less digits than its factorization.

1289848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 783 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 1289848 is about 1135.7147529199. The cubic root of 1289848 is about 108.8544475893.

The spelling of 1289848 in words is "one million, two hundred eighty-nine thousand, eight hundred forty-eight".