1298784 has 48 divisors (see below), whose sum is σ = 3471552. Its totient is φ = 425088.

The previous prime is 1298779. The next prime is 1298789. The reversal of 1298784 is 4878921.

It is an interprime number because it is at equal distance from previous prime (1298779) and next prime (1298789).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7887 + ... + 8049.

It is an arithmetic number, because the mean of its divisors is an integer number (72324).

2^1298784 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 1298784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1735776).

1298784 is an abundant number, since it is smaller than the sum of its proper divisors (2172768).

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

1298784 is a wasteful number, since it uses less digits than its factorization.

1298784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 251 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 1298784 is about 1139.6420490663. The cubic root of 1298784 is about 109.1052486201.

The spelling of 1298784 in words is "one million, two hundred ninety-eight thousand, seven hundred eighty-four".