12018630 has 32 divisors (see below), whose sum is σ = 31064544. Its totient is φ = 2958336.

The previous prime is 12018623. The next prime is 12018631. The reversal of 12018630 is 3681021.

It is a junction number, because it is equal to n+sod(n) for n = 12018597 and 12018606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018631) 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, 15019 + ... + 15798.

It is an arithmetic number, because the mean of its divisors is an integer number (970767).

Almost surely, 2^12018630 is an apocalyptic number.

12018630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12018630 is an abundant number, since it is smaller than the sum of its proper divisors (19045914).

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

12018630 is a wasteful number, since it uses less digits than its factorization.

12018630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30840.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12018630 is about 3466.7895811543. The cubic root of 12018630 is about 229.0612651753.

Adding to 12018630 its reverse (3681021), we get a palindrome (15699651).

The spelling of 12018630 in words is "twelve million, eighteen thousand, six hundred thirty".