1276789948 has 12 divisors (see below), whose sum is σ = 2553579952. Its totient is φ = 547195680.

The previous prime is 1276789903. The next prime is 1276789967. The reversal of 1276789948 is 8499876721.

1276789948 is an admirable number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 22799793 + ... + 22799848.

Almost surely, 2^1276789948 is an apocalyptic number.

It is an amenable number.

1276789948 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1276789948 is a wasteful number, since it uses less digits than its factorization.

1276789948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45599652 (or 45599650 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 61.

The square root of 1276789948 is about 35732.1976374250. The cubic root of 1276789948 is about 1084.8586387360.

The spelling of 1276789948 in words is "one billion, two hundred seventy-six million, seven hundred eighty-nine thousand, nine hundred forty-eight".