1257448484 has 12 divisors (see below), whose sum is σ = 2251710384. Its totient is φ = 614102664.

The previous prime is 1257448483. The next prime is 1257448487. The reversal of 1257448484 is 4848447521.

It is not an unprimeable number, because it can be changed into a prime (1257448483) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3655202 + ... + 3655545.

It is an arithmetic number, because the mean of its divisors is an integer number (187642532).

Almost surely, 2^1257448484 is an apocalyptic number.

It is an amenable number.

1257448484 is a deficient number, since it is larger than the sum of its proper divisors (994261900).

1257448484 is a wasteful number, since it uses less digits than its factorization.

1257448484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7310794 (or 7310792 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 47.

The square root of 1257448484 is about 35460.5200751484. The cubic root of 1257448484 is about 1079.3527454591.

The spelling of 1257448484 in words is "one billion, two hundred fifty-seven million, four hundred forty-eight thousand, four hundred eighty-four".