7216809824 has 96 divisors (see below), whose sum is σ = 17180352000. Its totient is φ = 2915066880.

The previous prime is 7216809811. The next prime is 7216809833. The reversal of 7216809824 is 4289086127.

It is a happy number.

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, 842684 + ... + 851204.

It is an arithmetic number, because the mean of its divisors is an integer number (178962000).

Almost surely, 2^7216809824 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 7216809824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8590176000).

7216809824 is an abundant number, since it is smaller than the sum of its proper divisors (9963542176).

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

7216809824 is a wasteful number, since it uses less digits than its factorization.

7216809824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756 (or 8748 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 7216809824 is about 84951.8088330084. The cubic root of 7216809824 is about 1932.4803518501.

The spelling of 7216809824 in words is "seven billion, two hundred sixteen million, eight hundred nine thousand, eight hundred twenty-four".