12381498 has 40 divisors (see below), whose sum is σ = 28958688. Its totient is φ = 3946536.

The previous prime is 12381497. The next prime is 12381511. The reversal of 12381498 is 89418321.

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

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 19 ways as a sum of consecutive naturals, for example, 2065 + ... + 5387.

Almost surely, 2^12381498 is an apocalyptic number.

12381498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12381498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14479344).

12381498 is an abundant number, since it is smaller than the sum of its proper divisors (16577190).

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

12381498 is a wasteful number, since it uses less digits than its factorization.

12381498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360 (or 3351 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12381498 is about 3518.7352841611. The cubic root of 12381498 is about 231.3437284531.

The spelling of 12381498 in words is "twelve million, three hundred eighty-one thousand, four hundred ninety-eight".