1288155128 has 32 divisors (see below), whose sum is σ = 2661582000. Its totient is φ = 580704768.

The previous prime is 1288155109. The next prime is 1288155149. The reversal of 1288155128 is 8215518821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139553 + ... + 148496.

Almost surely, 2^1288155128 is an apocalyptic number.

It is an amenable number.

1288155128 is an abundant number, since it is smaller than the sum of its proper divisors (1373426872).

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

1288155128 is a wasteful number, since it uses less digits than its factorization.

1288155128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288111 (or 288107 counting only the distinct ones).

The product of its digits is 51200, while the sum is 41.

The square root of 1288155128 is about 35890.8780611453. The cubic root of 1288155128 is about 1088.0680442414.

The spelling of 1288155128 in words is "one billion, two hundred eighty-eight million, one hundred fifty-five thousand, one hundred twenty-eight".