1090216 has 8 divisors (see below), whose sum is σ = 2044170. Its totient is φ = 545104.

The previous prime is 1090213. The next prime is 1090217. The reversal of 1090216 is 6120901.

It can be written as a sum of positive squares in only one way, i.e., 792100 + 298116 = 890^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1090193 and 1090202.

It is not an unprimeable number, because it can be changed into a prime (1090211) 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 as a sum of consecutive naturals, namely, 68131 + ... + 68146.

2^1090216 is an apocalyptic number.

It is an amenable number.

1090216 is a deficient number, since it is larger than the sum of its proper divisors (953954).

1090216 is a wasteful number, since it uses less digits than its factorization.

1090216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136283 (or 136279 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1090216 is about 1044.1340910056. The cubic root of 1090216 is about 102.9210442134.

The spelling of 1090216 in words is "one million, ninety thousand, two hundred sixteen".