72242244320 has 24 divisors (see below), whose sum is σ = 170672302584. Its totient is φ = 28896897664.

The previous prime is 72242244313. The next prime is 72242244397. The reversal of 72242244320 is 2344224227.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 225756854 + ... + 225757173.

It is an arithmetic number, because the mean of its divisors is an integer number (7111345941).

Almost surely, 2^72242244320 is an apocalyptic number.

It is an amenable number.

72242244320 is an abundant number, since it is smaller than the sum of its proper divisors (98430058264).

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

72242244320 is a wasteful number, since it uses less digits than its factorization.

72242244320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451514042 (or 451514034 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 32.

Adding to 72242244320 its reverse (2344224227), we get a palindrome (74586468547).

The spelling of 72242244320 in words is "seventy-two billion, two hundred forty-two million, two hundred forty-four thousand, three hundred twenty".