1288481326 has 24 divisors (see below), whose sum is σ = 2173819032. Its totient is φ = 572048400.

The previous prime is 1288481297. The next prime is 1288481329. The reversal of 1288481326 is 6231848821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288481329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51505 + ... + 72316.

It is an arithmetic number, because the mean of its divisors is an integer number (90575793).

Almost surely, 2^1288481326 is an apocalyptic number.

1288481326 is a deficient number, since it is larger than the sum of its proper divisors (885337706).

1288481326 is a wasteful number, since it uses less digits than its factorization.

1288481326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123888 (or 123877 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 1288481326 is about 35895.4220758024. The cubic root of 1288481326 is about 1088.1598798848.

The spelling of 1288481326 in words is "one billion, two hundred eighty-eight million, four hundred eighty-one thousand, three hundred twenty-six".