11983515 has 16 divisors (see below), whose sum is σ = 19792896. Its totient is φ = 6184800.

The previous prime is 11983507. The next prime is 11983519. The reversal of 11983515 is 51538911.

It is not a de Polignac number, because 11983515 - 2³ = 11983507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11983519) 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, 12421 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (1237056).

Almost surely, 2^11983515 is an apocalyptic number.

11983515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11983515 is a deficient number, since it is larger than the sum of its proper divisors (7809381).

11983515 is a wasteful number, since it uses less digits than its factorization.

11983515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25810.

The product of its digits is 5400, while the sum is 33.

The square root of 11983515 is about 3461.7213926022. The cubic root of 11983515 is about 228.8379637215.

The spelling of 11983515 in words is "eleven million, nine hundred eighty-three thousand, five hundred fifteen".