1288350 has 72 divisors (see below), whose sum is σ = 3965520. Its totient is φ = 293760.

The previous prime is 1288349. The next prime is 1288361. The reversal of 1288350 is 538821.

It is a happy 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 35 ways as a sum of consecutive naturals, for example, 2946 + ... + 3354.

2^1288350 is an apocalyptic number.

1288350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982760).

1288350 is an abundant number, since it is smaller than the sum of its proper divisors (2677170).

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

1288350 is a wasteful number, since it uses less digits than its factorization.

1288350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1288350 is about 1135.0550647436. The cubic root of 1288350 is about 108.8122909089.

The spelling of 1288350 in words is "one million, two hundred eighty-eight thousand, three hundred fifty".