1298766 has 48 divisors (see below), whose sum is σ = 3182976. Its totient is φ = 345984.

The previous prime is 1298747. The next prime is 1298771. The reversal of 1298766 is 6678921.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 12085 + ... + 12191.

It is an arithmetic number, because the mean of its divisors is an integer number (66312).

2^1298766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591488).

1298766 is an abundant number, since it is smaller than the sum of its proper divisors (1884210).

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

1298766 is a wasteful number, since it uses less digits than its factorization.

1298766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 136 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 1298766 is about 1139.6341518224. The cubic root of 1298766 is about 109.1047445836.

The spelling of 1298766 in words is "one million, two hundred ninety-eight thousand, seven hundred sixty-six".