1288338128 has 40 divisors (see below), whose sum is σ = 3112092480. Its totient is φ = 501949440.

The previous prime is 1288338127. The next prime is 1288338131. The reversal of 1288338128 is 8218338821.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288338127) 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, 521633 + ... + 524096.

It is an arithmetic number, because the mean of its divisors is an integer number (77802312).

Almost surely, 2^1288338128 is an apocalyptic number.

It is an amenable number.

1288338128 is an abundant number, since it is smaller than the sum of its proper divisors (1823754352).

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

1288338128 is a wasteful number, since it uses less digits than its factorization.

1288338128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045755 (or 1045749 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 1288338128 is about 35893.4273649090. The cubic root of 1288338128 is about 1088.1195667688.

The spelling of 1288338128 in words is "one billion, two hundred eighty-eight million, three hundred thirty-eight thousand, one hundred twenty-eight".