7216745280 has 56 divisors (see below), whose sum is σ = 22913169312. Its totient is φ = 1924465152.

The previous prime is 7216745279. The next prime is 7216745299. The reversal of 7216745280 is 825476127.

It is a super-3 number, since 3×7216745280³ (a number of 31 digits) contains 333 as substring.

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, 3757762 + ... + 3759681.

Almost surely, 2^7216745280 is an apocalyptic number.

It is an amenable number.

7216745280 is an abundant number, since it is smaller than the sum of its proper divisors (15696424032).

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

7216745280 is a wasteful number, since it uses less digits than its factorization.

7216745280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517463 (or 7517453 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 7216745280 is about 84951.4289461925. The cubic root of 7216745280 is about 1932.4745907457.

The spelling of 7216745280 in words is "seven billion, two hundred sixteen million, seven hundred forty-five thousand, two hundred eighty".