7222366720 has 80 divisors (see below), whose sum is σ = 17405870328. Its totient is φ = 2874081280.

The previous prime is 7222366691. The next prime is 7222366757. The reversal of 7222366720 is 276632227.

It can be written as a sum of positive squares in 4 ways, for example, as 5671897344 + 1550469376 = 75312^2 + 39376^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 7222366720.

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, 497160 + ... + 511480.

Almost surely, 2^7222366720 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 7222366720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8702935164).

7222366720 is an abundant number, since it is smaller than the sum of its proper divisors (10183503608).

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

7222366720 is a wasteful number, since it uses less digits than its factorization.

7222366720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14541 (or 14525 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 7222366720 is about 84984.5087059989. The cubic root of 7222366720 is about 1932.9762236440.

Adding to 7222366720 its reverse (276632227), we get a palindrome (7498998947).

The spelling of 7222366720 in words is "seven billion, two hundred twenty-two million, three hundred sixty-six thousand, seven hundred twenty".