12087616 has 14 divisors (see below), whose sum is σ = 23986490. Its totient is φ = 6043776.

The previous prime is 12087611. The next prime is 12087617. The reversal of 12087616 is 61678021.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 254016 = 3440^2 + 504^2 .

It is a super-2 number, since 2×12087616² = 292220921126912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94371 + ... + 94498.

Almost surely, 2^12087616 is an apocalyptic number.

12087616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12087616 is a deficient number, since it is larger than the sum of its proper divisors (11898874).

12087616 is an equidigital number, since it uses as much as digits as its factorization.

12087616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188881 (or 188871 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12087616 is about 3476.7248956453. The cubic root of 12087616 is about 229.4986939105.

The spelling of 12087616 in words is "twelve million, eighty-seven thousand, six hundred sixteen".