222506972928 has 432 divisors, whose sum is σ = 703745602560. Its totient is φ = 67350528000.

The previous prime is 222506972923. The next prime is 222506972951. The reversal of 222506972928 is 829279605222.

It is a happy number.

222506972928 is a `hidden beast` number, since 2 + 2 + 2 + 506 + 97 + 29 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222506972921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153346603 + ... + 153348053.

Almost surely, 2^222506972928 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 222506972928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351872801280).

222506972928 is an abundant number, since it is smaller than the sum of its proper divisors (481238629632).

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

222506972928 is a wasteful number, since it uses less digits than its factorization.

222506972928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 222506972928 in words is "two hundred twenty-two billion, five hundred six million, nine hundred seventy-two thousand, nine hundred twenty-eight".