72223605220 has 48 divisors (see below), whose sum is σ = 171933128640. Its totient is φ = 25263639936.

The previous prime is 72223605217. The next prime is 72223605271. The reversal of 72223605220 is 2250632227.

It is a happy number.

It is a super-2 number, since 2×72223605220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7305142 + ... + 7315021.

It is an arithmetic number, because the mean of its divisors is an integer number (3581940180).

Almost surely, 2^72223605220 is an apocalyptic number.

It is an amenable number.

72223605220 is an abundant number, since it is smaller than the sum of its proper divisors (99709523420).

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

72223605220 is a wasteful number, since it uses less digits than its factorization.

72223605220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14620204 (or 14620202 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 72223605220 in words is "seventy-two billion, two hundred twenty-three million, six hundred five thousand, two hundred twenty".