1288762648 has 16 divisors (see below), whose sum is σ = 2417858280. Its totient is φ = 644000448.

The previous prime is 1288762633. The next prime is 1288762667. The reversal of 1288762648 is 8462678821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1288762595 and 1288762604.

It is a congruent number.

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, 32965 + ... + 60532.

Almost surely, 2^1288762648 is an apocalyptic number.

It is an amenable number.

1288762648 is a deficient number, since it is larger than the sum of its proper divisors (1129095632).

1288762648 is a wasteful number, since it uses less digits than its factorization.

1288762648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95226 (or 95222 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The square root of 1288762648 is about 35899.3404953350. The cubic root of 1288762648 is about 1088.2390689867.

The spelling of 1288762648 in words is "one billion, two hundred eighty-eight million, seven hundred sixty-two thousand, six hundred forty-eight".