7211742280 has 64 divisors (see below), whose sum is σ = 16593595200. Its totient is φ = 2819969280.

The previous prime is 7211742269. The next prime is 7211742287. The reversal of 7211742280 is 822471127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7211742287) by changing a digit.

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, 418719 + ... + 435601.

It is an arithmetic number, because the mean of its divisors is an integer number (259274925).

Almost surely, 2^7211742280 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 7211742280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8296797600).

7211742280 is an abundant number, since it is smaller than the sum of its proper divisors (9381852920).

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

7211742280 is a wasteful number, since it uses less digits than its factorization.

7211742280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17134 (or 17130 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 7211742280 is about 84921.9776029739. The cubic root of 7211742280 is about 1932.0279256166.

The spelling of 7211742280 in words is "seven billion, two hundred eleven million, seven hundred forty-two thousand, two hundred eighty".