1267488684 has 216 divisors, whose sum is σ = 4120054848. Its totient is φ = 324838080.

The previous prime is 1267488671. The next prime is 1267488697. The reversal of 1267488684 is 4868847621.

1267488684 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1267488671) and next prime (1267488697).

It is a self number, because there is not a number n which added to its sum of digits gives 1267488684.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1610139 + ... + 1610925.

It is an arithmetic number, because the mean of its divisors is an integer number (19074328).

Almost surely, 2^1267488684 is an apocalyptic number.

1267488684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1267488684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060027424).

1267488684 is an abundant number, since it is smaller than the sum of its proper divisors (2852566164).

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

1267488684 is a wasteful number, since it uses less digits than its factorization.

1267488684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 893 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 1267488684 is about 35601.8073136744. The cubic root of 1267488684 is about 1082.2178600378.

The spelling of 1267488684 in words is "one billion, two hundred sixty-seven million, four hundred eighty-eight thousand, six hundred eighty-four".