1298688 has 72 divisors (see below), whose sum is σ = 3679200. Its totient is φ = 405504.

The previous prime is 1298653. The next prime is 1298699. The reversal of 1298688 is 8868921.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14548 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (51100).

2^1298688 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 1298688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1839600).

1298688 is an abundant number, since it is smaller than the sum of its proper divisors (2380512).

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

1298688 is an equidigital number, since it uses as much as digits as its factorization.

1298688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 113 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 1298688 is about 1139.5999297999. The cubic root of 1298688 is about 109.1025603717.

The spelling of 1298688 in words is "one million, two hundred ninety-eight thousand, six hundred eighty-eight".