7223044540 has 72 divisors (see below), whose sum is σ = 15952083840. Its totient is φ = 2745235584.

The previous prime is 7223044537. The next prime is 7223044567. The reversal of 7223044540 is 454403227.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1365621 + ... + 1370899.

It is an arithmetic number, because the mean of its divisors is an integer number (221556720).

Almost surely, 2^7223044540 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 7223044540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7976041920).

7223044540 is an abundant number, since it is smaller than the sum of its proper divisors (8729039300).

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

7223044540 is a wasteful number, since it uses less digits than its factorization.

7223044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411 (or 5366 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 7223044540 is about 84988.4965157050. The cubic root of 7223044540 is about 1933.0366917707.

Adding to 7223044540 its reverse (454403227), we get a palindrome (7677447767).

The spelling of 7223044540 in words is "seven billion, two hundred twenty-three million, forty-four thousand, five hundred forty".