1280222 has 8 divisors (see below), whose sum is σ = 1932336. Its totient is φ = 636112.

The previous prime is 1280221. The next prime is 1280231. The reversal of 1280222 is 2220821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1280222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280221) 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 3 ways as a sum of consecutive naturals, for example, 1583 + ... + 2250.

It is an arithmetic number, because the mean of its divisors is an integer number (241542).

2^1280222 is an apocalyptic number.

1280222 is a deficient number, since it is larger than the sum of its proper divisors (652114).

1280222 is a wasteful number, since it uses less digits than its factorization.

1280222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1280222 is about 1131.4689567107. The cubic root of 1280222 is about 108.5829813917.

The spelling of 1280222 in words is "one million, two hundred eighty thousand, two hundred twenty-two".