1276776012 has 12 divisors (see below), whose sum is σ = 2979144056. Its totient is φ = 425592000.

The previous prime is 1276775999. The next prime is 1276776037. The reversal of 1276776012 is 2106776721.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53198989 + ... + 53199012.

Almost surely, 2^1276776012 is an apocalyptic number.

1276776012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1276776012 is an abundant number, since it is smaller than the sum of its proper divisors (1702368044).

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

1276776012 is a wasteful number, since it uses less digits than its factorization.

1276776012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106398008 (or 106398006 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 1276776012 is about 35732.0026306951. The cubic root of 1276776012 is about 1084.8546916903.

The spelling of 1276776012 in words is "one billion, two hundred seventy-six million, seven hundred seventy-six thousand, twelve".