1288383888 has 80 divisors (see below), whose sum is σ = 3715405056. Its totient is φ = 381333120.

The previous prime is 1288383871. The next prime is 1288383907. The reversal of 1288383888 is 8883838821.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5670 + ... + 51077.

Almost surely, 2^1288383888 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 1288383888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857702528).

1288383888 is an abundant number, since it is smaller than the sum of its proper divisors (2427021168).

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

1288383888 is a wasteful number, since it uses less digits than its factorization.

1288383888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56812 (or 56806 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 57.

The square root of 1288383888 is about 35894.0648018583. The cubic root of 1288383888 is about 1088.1324494535.

The spelling of 1288383888 in words is "one billion, two hundred eighty-eight million, three hundred eighty-three thousand, eight hundred eighty-eight".