1271412628 has 12 divisors (see below), whose sum is σ = 2225268052. Its totient is φ = 635621760.

The previous prime is 1271412617. The next prime is 1271412631. The reversal of 1271412628 is 8262141721.

It can be written as a sum of positive squares in 2 ways, for example, as 811224324 + 460188304 = 28482^2 + 21452^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1271412593 and 1271412602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22876 + ... + 55372.

Almost surely, 2^1271412628 is an apocalyptic number.

It is an amenable number.

1271412628 is a deficient number, since it is larger than the sum of its proper divisors (953855424).

1271412628 is a wasteful number, since it uses less digits than its factorization.

1271412628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42282 (or 42280 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 1271412628 is about 35656.8735028746. The cubic root of 1271412628 is about 1083.3335011808. Note that the first 3 decimals are identical.

The spelling of 1271412628 in words is "one billion, two hundred seventy-one million, four hundred twelve thousand, six hundred twenty-eight".