1277267412 has 48 divisors (see below), whose sum is σ = 3046300992. Its totient is φ = 416428800.

The previous prime is 1277267401. The next prime is 1277267473. The reversal of 1277267412 is 2147627721.

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 15 ways as a sum of consecutive naturals, for example, 94248 + ... + 106944.

It is an arithmetic number, because the mean of its divisors is an integer number (63464604).

Almost surely, 2^1277267412 is an apocalyptic number.

1277267412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1277267412 is an abundant number, since it is smaller than the sum of its proper divisors (1769033580).

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

1277267412 is a wasteful number, since it uses less digits than its factorization.

1277267412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12888 (or 12886 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 1277267412 is about 35738.8781581068. The cubic root of 1277267412 is about 1084.9938518909.

The spelling of 1277267412 in words is "one billion, two hundred seventy-seven million, two hundred sixty-seven thousand, four hundred twelve".