1256046448 has 10 divisors (see below), whose sum is σ = 2433590024. Its totient is φ = 628023216.

The previous prime is 1256046371. The next prime is 1256046461. The reversal of 1256046448 is 8446406521.

It is a self number, because there is not a number n which added to its sum of digits gives 1256046448.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39251436 + ... + 39251467.

Almost surely, 2^1256046448 is an apocalyptic number.

It is an amenable number.

1256046448 is a deficient number, since it is larger than the sum of its proper divisors (1177543576).

1256046448 is an equidigital number, since it uses as much as digits as its factorization.

1256046448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78502911 (or 78502905 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 1256046448 is about 35440.7455903512. The cubic root of 1256046448 is about 1078.9514422895.

The spelling of 1256046448 in words is "one billion, two hundred fifty-six million, forty-six thousand, four hundred forty-eight".