1289360 has 40 divisors (see below), whose sum is σ = 3053376. Its totient is φ = 506240.

The previous prime is 1289341. The next prime is 1289363. The reversal of 1289360 is 639821.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1289363) 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, 5567 + ... + 5793.

2^1289360 is an apocalyptic number.

1289360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1135×1136.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1289360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526688).

1289360 is an abundant number, since it is smaller than the sum of its proper divisors (1764016).

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

1289360 is a wasteful number, since it uses less digits than its factorization.

1289360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1289360 is about 1135.4998899163. The cubic root of 1289360 is about 108.8407178911.

The spelling of 1289360 in words is "one million, two hundred eighty-nine thousand, three hundred sixty".