1288237888 has 56 divisors (see below), whose sum is σ = 2931192512. Its totient is φ = 550278144.

The previous prime is 1288237871. The next prime is 1288237901. The reversal of 1288237888 is 8887328821.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 135631 + ... + 144817.

Almost surely, 2^1288237888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288237888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465596256).

1288237888 is an abundant number, since it is smaller than the sum of its proper divisors (1642954624).

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

1288237888 is an equidigital number, since it uses as much as digits as its factorization.

1288237888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519 (or 9509 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 55.

The square root of 1288237888 is about 35892.0309818210. The cubic root of 1288237888 is about 1088.0913454160.

The spelling of 1288237888 in words is "one billion, two hundred eighty-eight million, two hundred thirty-seven thousand, eight hundred eighty-eight".