72023220522 has 96 divisors (see below), whose sum is σ = 176712943680. Its totient is φ = 21804059520.

The previous prime is 72023220497. The next prime is 72023220569. The reversal of 72023220522 is 22502232027.

It is a super-3 number, since 3×72023220522³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6029668 + ... + 6041600.

It is an arithmetic number, because the mean of its divisors is an integer number (1840759830).

Almost surely, 2^72023220522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72023220522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88356471840).

72023220522 is an abundant number, since it is smaller than the sum of its proper divisors (104689723158).

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

72023220522 is a wasteful number, since it uses less digits than its factorization.

72023220522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13090 (or 13078 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

Adding to 72023220522 its reverse (22502232027), we get a palindrome (94525452549).

The spelling of 72023220522 in words is "seventy-two billion, twenty-three million, two hundred twenty thousand, five hundred twenty-two".