1288881604 has 12 divisors (see below), whose sum is σ = 2277875628. Its totient is φ = 638060000.

The previous prime is 1288881593. The next prime is 1288881619. The reversal of 1288881604 is 4061888821.

It can be written as a sum of positive squares in 2 ways, for example, as 1207701504 + 81180100 = 34752^2 + 9010^2 .

It is a super-3 number, since 3×1288881604³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594747 + ... + 1595554.

It is an arithmetic number, because the mean of its divisors is an integer number (189822969).

Almost surely, 2^1288881604 is an apocalyptic number.

It is an amenable number.

1288881604 is a deficient number, since it is larger than the sum of its proper divisors (988994024).

1288881604 is a wasteful number, since it uses less digits than its factorization.

1288881604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190406 (or 3190404 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 46.

The square root of 1288881604 is about 35900.9972563437. The cubic root of 1288881604 is about 1088.2725503481.

The spelling of 1288881604 in words is "one billion, two hundred eighty-eight million, eight hundred eighty-one thousand, six hundred four".