1307921056 has 48 divisors (see below), whose sum is σ = 2793117600. Its totient is φ = 599286528.

The previous prime is 1307921051. The next prime is 1307921081. The reversal of 1307921056 is 6501297031.

It is not an unprimeable number, because it can be changed into a prime (1307921051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46515 + ... + 69133.

It is an arithmetic number, because the mean of its divisors is an integer number (58189950).

Almost surely, 2^1307921056 is an apocalyptic number.

1307921056 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 1307921056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396558800).

1307921056 is an abundant number, since it is smaller than the sum of its proper divisors (1485196544).

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

1307921056 is a wasteful number, since it uses less digits than its factorization.

1307921056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22781 (or 22773 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1307921056 is about 36165.1912202881. The cubic root of 1307921056 is about 1093.6050587103.

The spelling of 1307921056 in words is "one billion, three hundred seven million, nine hundred twenty-one thousand, fifty-six".