11785845 has 16 divisors (see below), whose sum is σ = 19967040. Its totient is φ = 5915904.

The previous prime is 11785841. The next prime is 11785847. The reversal of 11785845 is 54858711.

It is not a de Polignac number, because 11785845 - 2² = 11785841 is a prime.

It is a super-2 number, since 2×11785845² = 277812284728050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11785841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22855 + ... + 23364.

It is an arithmetic number, because the mean of its divisors is an integer number (1247940).

Almost surely, 2^11785845 is an apocalyptic number.

11785845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11785845 is a deficient number, since it is larger than the sum of its proper divisors (8181195).

11785845 is a wasteful number, since it uses less digits than its factorization.

11785845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46244.

The product of its digits is 44800, while the sum is 39.

The square root of 11785845 is about 3433.0518493026. The cubic root of 11785845 is about 227.5727417028.

The spelling of 11785845 in words is "eleven million, seven hundred eighty-five thousand, eight hundred forty-five".