1278054448 has 20 divisors (see below), whose sum is σ = 2701342728. Its totient is φ = 580933760.

The previous prime is 1278054397. The next prime is 1278054473. The reversal of 1278054448 is 8444508721.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3630661 + ... + 3631012.

Almost surely, 2^1278054448 is an apocalyptic number.

It is an amenable number.

1278054448 is an abundant number, since it is smaller than the sum of its proper divisors (1423288280).

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

1278054448 is a wasteful number, since it uses less digits than its factorization.

1278054448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261692 (or 7261686 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 43.

The square root of 1278054448 is about 35749.8873844380. The cubic root of 1278054448 is about 1085.2166592895.

The spelling of 1278054448 in words is "one billion, two hundred seventy-eight million, fifty-four thousand, four hundred forty-eight".