1189216 has 24 divisors (see below), whose sum is σ = 2676240. Its totient is φ = 509568.

The previous prime is 1189213. The next prime is 1189219. The reversal of 1189216 is 6129811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1189213) and next prime (1189219).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2431 + ... + 2878.

It is an arithmetic number, because the mean of its divisors is an integer number (111510).

2^1189216 is an apocalyptic number.

1189216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1189216 is an abundant number, since it is smaller than the sum of its proper divisors (1487024).

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

1189216 is an equidigital number, since it uses as much as digits as its factorization.

1189216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326 (or 5318 counting only the distinct ones).

The product of its digits is 864, while the sum is 28.

The square root of 1189216 is about 1090.5118064469. The cubic root of 1189216 is about 105.9465732897.

The spelling of 1189216 in words is "one million, one hundred eighty-nine thousand, two hundred sixteen".