12087378 has 24 divisors (see below), whose sum is σ = 26254800. Its totient is φ = 4019064.

The previous prime is 12087371. The next prime is 12087379. The reversal of 12087378 is 87378021.

It is a super-2 number, since 2×12087378² = 292209413829768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12087371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11353 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (1093950).

Almost surely, 2^12087378 is an apocalyptic number.

12087378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12087378 is an abundant number, since it is smaller than the sum of its proper divisors (14167422).

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

12087378 is a wasteful number, since it uses less digits than its factorization.

12087378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1683 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 12087378 is about 3476.6906678622. The cubic root of 12087378 is about 229.4971876569.

The spelling of 12087378 in words is "twelve million, eighty-seven thousand, three hundred seventy-eight".