1272269488 has 80 divisors (see below), whose sum is σ = 2973579520. Its totient is φ = 515144448.

The previous prime is 1272269459. The next prime is 1272269491. The reversal of 1272269488 is 8849622721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1163470 + ... + 1164562.

It is an arithmetic number, because the mean of its divisors is an integer number (37169744).

Almost surely, 2^1272269488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272269488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486789760).

1272269488 is an abundant number, since it is smaller than the sum of its proper divisors (1701310032).

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

1272269488 is a wasteful number, since it uses less digits than its factorization.

1272269488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674 (or 1668 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 1272269488 is about 35668.8868343266. The cubic root of 1272269488 is about 1083.5768149744.

The spelling of 1272269488 in words is "one billion, two hundred seventy-two million, two hundred sixty-nine thousand, four hundred eighty-eight".