1270861312 has 80 divisors (see below), whose sum is σ = 2950070112. Its totient is φ = 535633920.

The previous prime is 1270861309. The next prime is 1270861321. The reversal of 1270861312 is 2131680721.

It is a super-2 number, since 2×1270861312² = 3230176948676722688, which contains 22 as substring.

It is a congruent number.

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, 215718 + ... + 221530.

Almost surely, 2^1270861312 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 1270861312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475035056).

1270861312 is an abundant number, since it is smaller than the sum of its proper divisors (1679208800).

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

1270861312 is an frugal number, since it uses more digits than its factorization.

1270861312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5883 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1270861312 is about 35649.1418129525. The cubic root of 1270861312 is about 1083.1768917976.

The spelling of 1270861312 in words is "one billion, two hundred seventy million, eight hundred sixty-one thousand, three hundred twelve".