1216324 has 6 divisors (see below), whose sum is σ = 2128574. Its totient is φ = 608160.

The previous prime is 1216277. The next prime is 1216337. The reversal of 1216324 is 4236121.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 28224 = 1090^2 + 168^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152037 + ... + 152044.

2^1216324 is an apocalyptic number.

It is an amenable number.

1216324 is a deficient number, since it is larger than the sum of its proper divisors (912250).

1216324 is a wasteful number, since it uses less digits than its factorization.

1216324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304085 (or 304083 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1216324 is about 1102.8707993233. The cubic root of 1216324 is about 106.7455449550.

It can be divided in two parts, 1216 and 324, that added together give a triangular number (1540 = T₅₅).

The spelling of 1216324 in words is "one million, two hundred sixteen thousand, three hundred twenty-four".