222001948728 has 48 divisors (see below), whose sum is σ = 687148890480. Its totient is φ = 63429128064.

The previous prime is 222001948709. The next prime is 222001948739. The reversal of 222001948728 is 827849100222.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220239525 + ... + 220240532.

It is an arithmetic number, because the mean of its divisors is an integer number (14315601885).

Almost surely, 2^222001948728 is an apocalyptic number.

222001948728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

222001948728 is an abundant number, since it is smaller than the sum of its proper divisors (465146941752).

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

222001948728 is a wasteful number, since it uses less digits than its factorization.

222001948728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440480076 (or 440480069 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 222001948728 in words is "two hundred twenty-two billion, one million, nine hundred forty-eight thousand, seven hundred twenty-eight".