11805830 has 16 divisors (see below), whose sum is σ = 21289824. Its totient is φ = 4713600.

The previous prime is 11805817. The next prime is 11805847. The reversal of 11805830 is 3850811.

It is a self number, because there is not a number n which added to its sum of digits gives 11805830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9230 + ... + 10430.

It is an arithmetic number, because the mean of its divisors is an integer number (1330614).

Almost surely, 2^11805830 is an apocalyptic number.

11805830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11805830 is a deficient number, since it is larger than the sum of its proper divisors (9483994).

11805830 is a wasteful number, since it uses less digits than its factorization.

11805830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 11805830 is about 3435.9612919822. The cubic root of 11805830 is about 227.7012991090.

The spelling of 11805830 in words is "eleven million, eight hundred five thousand, eight hundred thirty".