7216429840 has 40 divisors (see below), whose sum is σ = 16785097560. Its totient is φ = 2885385216.

The previous prime is 7216429817. The next prime is 7216429853. The reversal of 7216429840 is 489246127.

It can be written as a sum of positive squares in 4 ways, for example, as 2912545024 + 4303884816 = 53968^2 + 65604^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 192126 + ... + 226594.

It is an arithmetic number, because the mean of its divisors is an integer number (419627439).

Almost surely, 2^7216429840 is an apocalyptic number.

It is an amenable number.

7216429840 is an abundant number, since it is smaller than the sum of its proper divisors (9568667720).

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

7216429840 is a wasteful number, since it uses less digits than its factorization.

7216429840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37099 (or 37093 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 7216429840 is about 84949.5723355921. The cubic root of 7216429840 is about 1932.4464345320.

The spelling of 7216429840 in words is "seven billion, two hundred sixteen million, four hundred twenty-nine thousand, eight hundred forty".