222641280 has 96 divisors (see below), whose sum is σ = 768828060. Its totient is φ = 59369472.

The previous prime is 222641261. The next prime is 222641281. The reversal of 222641280 is 82146222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 201185856 + 21455424 = 14184^2 + 4632^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (222641281) 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 11 ways as a sum of consecutive naturals, for example, 13567 + ... + 25086.

Almost surely, 2^222641280 is an apocalyptic number.

222641280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222641280 is an abundant number, since it is smaller than the sum of its proper divisors (546186780).

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

222641280 is a wasteful number, since it uses less digits than its factorization.

222641280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678 (or 38663 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 222641280 is about 14921.1688550194. The cubic root of 222641280 is about 606.0873644590.

The spelling of 222641280 in words is "two hundred twenty-two million, six hundred forty-one thousand, two hundred eighty".