11890785 has 16 divisors (see below), whose sum is σ = 19071360. Its totient is φ = 6326400.

The previous prime is 11890777. The next prime is 11890787. The reversal of 11890785 is 58709811.

It is not a de Polignac number, because 11890785 - 2³ = 11890777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11890787) 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 15 ways as a sum of consecutive naturals, for example, 8356 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (1191960).

Almost surely, 2^11890785 is an apocalyptic number.

11890785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11890785 is a deficient number, since it is larger than the sum of its proper divisors (7180575).

11890785 is a wasteful number, since it uses less digits than its factorization.

11890785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 11890785 is about 3448.3017559373. The cubic root of 11890785 is about 228.2461753175.

The spelling of 11890785 in words is "eleven million, eight hundred ninety thousand, seven hundred eighty-five".