7924481920 has 64 divisors (see below), whose sum is σ = 19018573200. Its totient is φ = 3157393408.

The previous prime is 7924481909. The next prime is 7924481959. The reversal of 7924481920 is 291844297.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140391 + ... + 188569.

Almost surely, 2^7924481920 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 7924481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9509286600).

7924481920 is an abundant number, since it is smaller than the sum of its proper divisors (11094091280).

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

7924481920 is a wasteful number, since it uses less digits than its factorization.

7924481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48455 (or 48443 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 7924481920 is about 89019.5591990884. The cubic root of 7924481920 is about 1993.6869201453.

The spelling of 7924481920 in words is "seven billion, nine hundred twenty-four million, four hundred eighty-one thousand, nine hundred twenty".