1267855228 has 6 divisors (see below), whose sum is σ = 2218746656. Its totient is φ = 633927612.

The previous prime is 1267855201. The next prime is 1267855297. The reversal of 1267855228 is 8225587621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158481900 + ... + 158481907.

Almost surely, 2^1267855228 is an apocalyptic number.

It is an amenable number.

1267855228 is a deficient number, since it is larger than the sum of its proper divisors (950891428).

1267855228 is a wasteful number, since it uses less digits than its factorization.

1267855228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316963811 (or 316963809 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 1267855228 is about 35606.9547701007. The cubic root of 1267855228 is about 1082.3221718779.

The spelling of 1267855228 in words is "one billion, two hundred sixty-seven million, eight hundred fifty-five thousand, two hundred twenty-eight".