1380228 has 12 divisors (see below), whose sum is σ = 3220560. Its totient is φ = 460072.

The previous prime is 1380227. The next prime is 1380233. The reversal of 1380228 is 8220831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1380198 and 1380207.

It is not an unprimeable number, because it can be changed into a prime (1380221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57498 + ... + 57521.

It is an arithmetic number, because the mean of its divisors is an integer number (268380).

2^1380228 is an apocalyptic number.

It is an amenable number.

1380228 is an abundant number, since it is smaller than the sum of its proper divisors (1840332).

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

1380228 is a wasteful number, since it uses less digits than its factorization.

1380228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115026 (or 115024 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1380228 is about 1174.8310516836. The cubic root of 1380228 is about 111.3397592317.

The spelling of 1380228 in words is "one million, three hundred eighty thousand, two hundred twenty-eight".