1267916628 has 24 divisors (see below), whose sum is σ = 3227424480. Its totient is φ = 384217120.

The previous prime is 1267916623. The next prime is 1267916681. The reversal of 1267916628 is 8266197621.

It is a super-3 number, since 3×1267916628³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267916621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4802583 + ... + 4802846.

It is an arithmetic number, because the mean of its divisors is an integer number (134476020).

Almost surely, 2^1267916628 is an apocalyptic number.

It is an amenable number.

1267916628 is an abundant number, since it is smaller than the sum of its proper divisors (1959507852).

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

1267916628 is a wasteful number, since it uses less digits than its factorization.

1267916628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9605447 (or 9605445 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 1267916628 is about 35607.8169507764. The cubic root of 1267916628 is about 1082.3396432493.

The spelling of 1267916628 in words is "one billion, two hundred sixty-seven million, nine hundred sixteen thousand, six hundred twenty-eight".