1270864056 has 128 divisors (see below), whose sum is σ = 3986380800. Its totient is φ = 327991680.

The previous prime is 1270864043. The next prime is 1270864069. The reversal of 1270864056 is 6504680721.

It is an interprime number because it is at equal distance from previous prime (1270864043) and next prime (1270864069).

It is a super-2 number, since 2×1270864056² = 3230190897665542272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299115 + ... + 303333.

It is an arithmetic number, because the mean of its divisors is an integer number (31143600).

Almost surely, 2^1270864056 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 1270864056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993190400).

1270864056 is an abundant number, since it is smaller than the sum of its proper divisors (2715516744).

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

1270864056 is a wasteful number, since it uses less digits than its factorization.

1270864056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409 (or 4405 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1270864056 is about 35649.1802991317. The cubic root of 1270864056 is about 1083.1776713832.

The spelling of 1270864056 in words is "one billion, two hundred seventy million, eight hundred sixty-four thousand, fifty-six".