11985798 has 16 divisors (see below), whose sum is σ = 26150976. Its totient is φ = 3632040.

The previous prime is 11985793. The next prime is 11985803. The reversal of 11985798 is 89758911.

It is an interprime number because it is at equal distance from previous prime (11985793) and next prime (11985803).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11985793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90736 + ... + 90867.

It is an arithmetic number, because the mean of its divisors is an integer number (1634436).

Almost surely, 2^11985798 is an apocalyptic number.

11985798 is an abundant number, since it is smaller than the sum of its proper divisors (14165178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11985798 is a wasteful number, since it uses less digits than its factorization.

11985798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181619.

The product of its digits is 181440, while the sum is 48.

The square root of 11985798 is about 3462.0511261390. The cubic root of 11985798 is about 228.8524949031.

It can be divided in two parts, 1198 and 5798, that added together give a palindrome (6996).

The spelling of 11985798 in words is "eleven million, nine hundred eighty-five thousand, seven hundred ninety-eight".