1007781216 has 96 divisors (see below), whose sum is σ = 3016567008. Its totient is φ = 291840000.

The previous prime is 1007781211. The next prime is 1007781217. The reversal of 1007781216 is 6121877001.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007781211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2535 + ... + 44966.

It is an arithmetic number, because the mean of its divisors is an integer number (31422573).

Almost surely, 2^1007781216 is an apocalyptic number.

1007781216 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 1007781216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508283504).

1007781216 is an abundant number, since it is smaller than the sum of its proper divisors (2008785792).

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

1007781216 is a wasteful number, since it uses less digits than its factorization.

1007781216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47544 (or 47536 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 33.

The square root of 1007781216 is about 31745.5700216581. The cubic root of 1007781216 is about 1002.5870401186.

The spelling of 1007781216 in words is "one billion, seven million, seven hundred eighty-one thousand, two hundred sixteen".