1378228 has 12 divisors (see below), whose sum is σ = 2463552. Its totient is φ = 674360.

The previous prime is 1378219. The next prime is 1378231. The reversal of 1378228 is 8228731.

It is a self number, because there is not a number n which added to its sum of digits gives 1378228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3478 + ... + 3853.

It is an arithmetic number, because the mean of its divisors is an integer number (205296).

2^1378228 is an apocalyptic number.

It is an amenable number.

1378228 is a deficient number, since it is larger than the sum of its proper divisors (1085324).

1378228 is a wasteful number, since it uses less digits than its factorization.

1378228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382 (or 7380 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 1378228 is about 1173.9795568919. The cubic root of 1378228 is about 111.2859547969.

The spelling of 1378228 in words is "one million, three hundred seventy-eight thousand, two hundred twenty-eight".