12087438 has 32 divisors (see below), whose sum is σ = 26497152. Its totient is φ = 3645600.

The previous prime is 12087437. The next prime is 12087451. The reversal of 12087438 is 83478021.

It is a super-2 number, since 2×12087438² = 292212314807688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12087399 and 12087408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24373 + ... + 24863.

It is an arithmetic number, because the mean of its divisors is an integer number (828036).

Almost surely, 2^12087438 is an apocalyptic number.

12087438 is an abundant number, since it is smaller than the sum of its proper divisors (14409714).

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

12087438 is a wasteful number, since it uses less digits than its factorization.

12087438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 12087438 is about 3476.6992967468. The cubic root of 12087438 is about 229.4975673866.

It can be divided in two parts, 1208 and 7438, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 12087438 in words is "twelve million, eighty-seven thousand, four hundred thirty-eight".