222056640 has 280 divisors, whose sum is σ = 851946480. Its totient is φ = 54577152.

The previous prime is 222056609. The next prime is 222056641. The reversal of 222056640 is 46650222.

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

It is not an unprimeable number, because it can be changed into a prime (222056641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 336631 + ... + 337289.

It is an arithmetic number, because the mean of its divisors is an integer number (3042666).

Almost surely, 2^222056640 is an apocalyptic number.

222056640 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 222056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425973240).

222056640 is an abundant number, since it is smaller than the sum of its proper divisors (629889840).

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

222056640 is a wasteful number, since it uses less digits than its factorization.

222056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 222056640 is about 14901.5650184804. The cubic root of 222056640 is about 605.5563854634.

The spelling of 222056640 in words is "two hundred twenty-two million, fifty-six thousand, six hundred forty".