1260734656 has 42 divisors (see below), whose sum is σ = 2545341620. Its totient is φ = 619573632.

The previous prime is 1260734623. The next prime is 1260734663. The reversal of 1260734656 is 6564370621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219955 + ... + 225613.

Almost surely, 2^1260734656 is an apocalyptic number.

1260734656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260734656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272670810).

1260734656 is an abundant number, since it is smaller than the sum of its proper divisors (1284606964).

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

1260734656 is an frugal number, since it uses more digits than its factorization.

1260734656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789 (or 5720 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1260734656 is about 35506.8254846867. The cubic root of 1260734656 is about 1080.2921751795.

The spelling of 1260734656 in words is "one billion, two hundred sixty million, seven hundred thirty-four thousand, six hundred fifty-six".