12381492 has 48 divisors (see below), whose sum is σ = 30562560. Its totient is φ = 3894912.

The previous prime is 12381487. The next prime is 12381497. The reversal of 12381492 is 29418321.

It is an interprime number because it is at equal distance from previous prime (12381487) and next prime (12381497).

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381497) 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, 15978 + ... + 16734.

It is an arithmetic number, because the mean of its divisors is an integer number (636720).

Almost surely, 2^12381492 is an apocalyptic number.

12381492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12381492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15281280).

12381492 is an abundant number, since it is smaller than the sum of its proper divisors (18181068).

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

12381492 is a wasteful number, since it uses less digits than its factorization.

12381492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12381492 is about 3518.7344315819. The cubic root of 12381492 is about 231.3436910838.

The spelling of 12381492 in words is "twelve million, three hundred eighty-one thousand, four hundred ninety-two".