222894584640 has 672 divisors, whose sum is σ = 976157844480. Its totient is φ = 45405093888.

The previous prime is 222894584639. The next prime is 222894584687. The reversal of 222894584640 is 46485498222.

222894584640 is a `hidden beast` number, since 22 + 28 + 94 + 58 + 464 + 0 = 666.

222894584640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7585657 + ... + 7614983.

It is an arithmetic number, because the mean of its divisors is an integer number (1452615840).

Almost surely, 2^222894584640 is an apocalyptic number.

222894584640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222894584640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488078922240).

222894584640 is an abundant number, since it is smaller than the sum of its proper divisors (753263259840).

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

222894584640 is a wasteful number, since it uses less digits than its factorization.

222894584640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29399 (or 29386 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 222894584640 in words is "two hundred twenty-two billion, eight hundred ninety-four million, five hundred eighty-four thousand, six hundred forty".