11216890 has 8 divisors (see below), whose sum is σ = 20190420. Its totient is φ = 4486752.

The previous prime is 11216861. The next prime is 11216911. The reversal of 11216890 is 9861211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11215801 + 1089 = 3349^2 + 33^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 560835 + ... + 560854.

Almost surely, 2^11216890 is an apocalyptic number.

11216890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11216890 is a deficient number, since it is larger than the sum of its proper divisors (8973530).

11216890 is a wasteful number, since it uses less digits than its factorization.

11216890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121696.

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

The square root of 11216890 is about 3349.1625819001. The cubic root of 11216890 is about 223.8502001201.

The spelling of 11216890 in words is "eleven million, two hundred sixteen thousand, eight hundred ninety".