1289760 has 48 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 343808.

The previous prime is 1289753. The next prime is 1289779. The reversal of 1289760 is 679821.

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

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 864 + ... + 1823.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2^1289760 is an apocalyptic number.

1289760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1289760 is an abundant number, since it is smaller than the sum of its proper divisors (2774496).

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

1289760 is a wasteful number, since it uses less digits than its factorization.

1289760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1289760 is about 1135.6760101367. The cubic root of 1289760 is about 108.8519719980.

The spelling of 1289760 in words is "one million, two hundred eighty-nine thousand, seven hundred sixty".