1288700 has 54 divisors (see below), whose sum is σ = 3265416. Its totient is φ = 440160.

The previous prime is 1288699. The next prime is 1288709. The reversal of 1288700 is 78821.

It is a self number, because there is not a number n which added to its sum of digits gives 1288700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4769 + ... + 5031.

2^1288700 is an apocalyptic number.

1288700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632708).

1288700 is an abundant number, since it is smaller than the sum of its proper divisors (1976716).

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

1288700 is a wasteful number, since it uses less digits than its factorization.

1288700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1288700 is about 1135.2092318159. The cubic root of 1288700 is about 108.8221435249.

The spelling of 1288700 in words is "one million, two hundred eighty-eight thousand, seven hundred".