1271274448 has 10 divisors (see below), whose sum is σ = 2463094274. Its totient is φ = 635637216.

The previous prime is 1271274427. The next prime is 1271274449. The reversal of 1271274448 is 8444721721.

It can be written as a sum of positive squares in only one way, i.e., 1188318784 + 82955664 = 34472^2 + 9108^2 .

It is a super-2 number, since 2×1271274448² = 3232277444275409408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1271274448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271274449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39727311 + ... + 39727342.

Almost surely, 2^1271274448 is an apocalyptic number.

It is an amenable number.

1271274448 is a deficient number, since it is larger than the sum of its proper divisors (1191819826).

1271274448 is an equidigital number, since it uses as much as digits as its factorization.

1271274448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79454661 (or 79454655 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 1271274448 is about 35654.9358153959. The cubic root of 1271274448 is about 1083.2942533805.

The spelling of 1271274448 in words is "one billion, two hundred seventy-one million, two hundred seventy-four thousand, four hundred forty-eight".