7228212720 has 160 divisors (see below), whose sum is σ = 23274224640. Its totient is φ = 1854366720.

The previous prime is 7228212713. The next prime is 7228212727. The reversal of 7228212720 is 272128227.

It is an interprime number because it is at equal distance from previous prime (7228212713) and next prime (7228212727).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228212727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660090 + ... + 670950.

It is an arithmetic number, because the mean of its divisors is an integer number (145463904).

Almost surely, 2^7228212720 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 7228212720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11637112320).

7228212720 is an abundant number, since it is smaller than the sum of its proper divisors (16046011920).

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

7228212720 is a wasteful number, since it uses less digits than its factorization.

7228212720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10983 (or 10977 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 7228212720 is about 85018.8962525391. The cubic root of 7228212720 is about 1933.4976192802.

The spelling of 7228212720 in words is "seven billion, two hundred twenty-eight million, two hundred twelve thousand, seven hundred twenty".