1284057648 has 30 divisors (see below), whose sum is σ = 3593578404. Its totient is φ = 428019168.

The previous prime is 1284057647. The next prime is 1284057653. The reversal of 1284057648 is 8467504821.

It is not an unprimeable number, because it can be changed into a prime (1284057647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4458390 + ... + 4458677.

Almost surely, 2^1284057648 is an apocalyptic number.

1284057648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1284057648 is an abundant number, since it is smaller than the sum of its proper divisors (2309520756).

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

1284057648 is a wasteful number, since it uses less digits than its factorization.

1284057648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917081 (or 8917072 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1284057648 is about 35833.7501247079. The cubic root of 1284057648 is about 1086.9131438507.

The spelling of 1284057648 in words is "one billion, two hundred eighty-four million, fifty-seven thousand, six hundred forty-eight".