11289885 has 16 divisors (see below), whose sum is σ = 18105984. Its totient is φ = 6007232.

The previous prime is 11289877. The next prime is 11289899. The reversal of 11289885 is 58898211.

It is a cyclic number.

It is not a de Polignac number, because 11289885 - 2³ = 11289877 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10639 + ... + 11651.

It is an arithmetic number, because the mean of its divisors is an integer number (1131624).

Almost surely, 2^11289885 is an apocalyptic number.

11289885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11289885 is a deficient number, since it is larger than the sum of its proper divisors (6816099).

11289885 is a wasteful number, since it uses less digits than its factorization.

11289885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764.

The product of its digits is 46080, while the sum is 42.

The square root of 11289885 is about 3360.0424104466. The cubic root of 11289885 is about 224.3347262337.

The spelling of 11289885 in words is "eleven million, two hundred eighty-nine thousand, eight hundred eighty-five".