1378222 has 8 divisors (see below), whose sum is σ = 2176200. Its totient is φ = 652824.

The previous prime is 1378219. The next prime is 1378231. The reversal of 1378222 is 2228731.

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

It is a congruent number.

It is an unprimeable number.

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, 18097 + ... + 18172.

It is an arithmetic number, because the mean of its divisors is an integer number (272025).

2^1378222 is an apocalyptic number.

1378222 is a deficient number, since it is larger than the sum of its proper divisors (797978).

1378222 is a wasteful number, since it uses less digits than its factorization.

1378222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36290.

The product of its digits is 1344, while the sum is 25.

The square root of 1378222 is about 1173.9770014783. The cubic root of 1378222 is about 111.2857933053.

It can be divided in two parts, 1378 and 222, that added together give a square (1600 = 40²).

The spelling of 1378222 in words is "one million, three hundred seventy-eight thousand, two hundred twenty-two".