1212328 has 16 divisors (see below), whose sum is σ = 2448180. Its totient is φ = 559488.

The previous prime is 1212319. The next prime is 1212331. The reversal of 1212328 is 8232121.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 6724 = 1098^2 + 82^2 .

It is an Ulam 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, 5725 + ... + 5932.

2^1212328 is an apocalyptic number.

It is an amenable number.

1212328 is an abundant number, since it is smaller than the sum of its proper divisors (1235852).

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

1212328 is a wasteful number, since it uses less digits than its factorization.

1212328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11676 (or 11672 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1212328 is about 1101.0576733305. The cubic root of 1212328 is about 106.6285193451.

Adding to 1212328 its reverse (8232121), we get a palindrome (9444449).

It can be divided in two parts, 1212 and 328, that added together give a triangular number (1540 = T₅₅).

The spelling of 1212328 in words is "one million, two hundred twelve thousand, three hundred twenty-eight".