7216385904 has 400 divisors, whose sum is σ = 26322537472. Its totient is φ = 1857655296.

The previous prime is 7216385887. The next prime is 7216385963. The reversal of 7216385904 is 4095836127.

7216385904 is a `hidden beast` number, since 7 + 2 + 1 + 638 + 5 + 9 + 0 + 4 = 666.

7216385904 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

7216385904 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7216385904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5070537 + ... + 5071959.

It is a 1-persistent number, because it is pandigital, but 2⋅7216385904 = 14432771808 is not.

Almost surely, 2^7216385904 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 7216385904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13161268736).

7216385904 is an abundant number, since it is smaller than the sum of its proper divisors (19106151568).

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

7216385904 is a wasteful number, since it uses less digits than its factorization.

7216385904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 7216385904 is about 84949.3137347207. The cubic root of 7216385904 is about 1932.4425127341.

The spelling of 7216385904 in words is "seven billion, two hundred sixteen million, three hundred eighty-five thousand, nine hundred four".