11287081 has 8 divisors (see below), whose sum is σ = 12219200. Its totient is φ = 10364112.

The previous prime is 11287079. The next prime is 11287103. The reversal of 11287081 is 18078211.

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

It is a cyclic number.

It is not a de Polignac number, because 11287081 - 2¹ = 11287079 is a prime.

It is a super-2 number, since 2×11287081² = 254796395001122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11287051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406 + ... + 4768.

It is an arithmetic number, because the mean of its divisors is an integer number (1527400).

Almost surely, 2^11287081 is an apocalyptic number.

It is an amenable number.

11287081 is a deficient number, since it is larger than the sum of its proper divisors (932119).

11287081 is a wasteful number, since it uses less digits than its factorization.

11287081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 11287081 is about 3359.6251278975. The cubic root of 11287081 is about 224.3161524792.

The spelling of 11287081 in words is "eleven million, two hundred eighty-seven thousand, eighty-one".