1267769472 has 64 divisors (see below), whose sum is σ = 3372658560. Its totient is φ = 421944320.

The previous prime is 1267769413. The next prime is 1267769513. The reversal of 1267769472 is 2749677621.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294697 + ... + 298967.

It is an arithmetic number, because the mean of its divisors is an integer number (52697790).

Almost surely, 2^1267769472 is an apocalyptic number.

1267769472 is a gapful number since it is divisible by the number (12) 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 1267769472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686329280).

1267769472 is an abundant number, since it is smaller than the sum of its proper divisors (2104889088).

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

1267769472 is an equidigital number, since it uses as much as digits as its factorization.

1267769472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061 (or 5049 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 51.

The square root of 1267769472 is about 35605.7505467867. The cubic root of 1267769472 is about 1082.2977690621.

The spelling of 1267769472 in words is "one billion, two hundred sixty-seven million, seven hundred sixty-nine thousand, four hundred seventy-two".