7930894720 has 128 divisors (see below), whose sum is σ = 21752193600. Its totient is φ = 2708643840.

The previous prime is 7930894691. The next prime is 7930894733. The reversal of 7930894720 is 274980397.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1201830 + ... + 1208410.

Almost surely, 2^7930894720 is an apocalyptic number.

7930894720 is a gapful number since it is divisible by the number (70) 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 7930894720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10876096800).

7930894720 is an abundant number, since it is smaller than the sum of its proper divisors (13821298880).

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

7930894720 is a wasteful number, since it uses less digits than its factorization.

7930894720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876 (or 6864 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 7930894720 is about 89055.5709655494. The cubic root of 7930894720 is about 1994.2245648950.

The spelling of 7930894720 in words is "seven billion, nine hundred thirty million, eight hundred ninety-four thousand, seven hundred twenty".