1288057448 has 8 divisors (see below), whose sum is σ = 2415107730. Its totient is φ = 644028720.

The previous prime is 1288057439. The next prime is 1288057457. The reversal of 1288057448 is 8447508821.

It is an interprime number because it is at equal distance from previous prime (1288057439) and next prime (1288057457).

It can be written as a sum of positive squares in only one way, i.e., 732135364 + 555922084 = 27058^2 + 23578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80503583 + ... + 80503598.

Almost surely, 2^1288057448 is an apocalyptic number.

It is an amenable number.

1288057448 is a deficient number, since it is larger than the sum of its proper divisors (1127050282).

1288057448 is a wasteful number, since it uses less digits than its factorization.

1288057448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161007187 (or 161007183 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 47.

The square root of 1288057448 is about 35889.5172438973. The cubic root of 1288057448 is about 1088.0405410391.

The spelling of 1288057448 in words is "one billion, two hundred eighty-eight million, fifty-seven thousand, four hundred forty-eight".