11840385 has 16 divisors (see below), whose sum is σ = 18998784. Its totient is φ = 6296832.

The previous prime is 11840383. The next prime is 11840393. The reversal of 11840385 is 58304811.

It is not a de Polignac number, because 11840385 - 2¹ = 11840383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11840383) 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, 5584 + ... + 7406.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^11840385 is an apocalyptic number.

11840385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11840385 is a deficient number, since it is larger than the sum of its proper divisors (7158399).

11840385 is a wasteful number, since it uses less digits than its factorization.

11840385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 11840385 is about 3440.9860505384. The cubic root of 11840385 is about 227.9232390104.

Subtracting from 11840385 its product of nonzero digits (3840), we obtain a triangular number (11836545 = T₄₈₆₅).

The spelling of 11840385 in words is "eleven million, eight hundred forty thousand, three hundred eighty-five".