1216832 has 14 divisors (see below), whose sum is σ = 2414778. Its totient is φ = 608384.

The previous prime is 1216823. The next prime is 1216841. The reversal of 1216832 is 2386121.

It is an interprime number because it is at equal distance from previous prime (1216823) and next prime (1216841).

It can be written as a sum of positive squares in only one way, i.e., 614656 + 602176 = 784^2 + 776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1216798 and 1216807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9443 + ... + 9570.

2^1216832 is an apocalyptic number.

It is an amenable number.

1216832 is a deficient number, since it is larger than the sum of its proper divisors (1197946).

1216832 is an equidigital number, since it uses as much as digits as its factorization.

1216832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19025 (or 19015 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1216832 is about 1103.1010833101. The cubic root of 1216832 is about 106.7604037123.

It can be divided in two parts, 12168 and 32, that multiplied together give a square (389376 = 624²).

The spelling of 1216832 in words is "one million, two hundred sixteen thousand, eight hundred thirty-two".