12520018 has 8 divisors (see below), whose sum is σ = 21462912. Its totient is φ = 5365716.

The previous prime is 12520003. The next prime is 12520021. The reversal of 12520018 is 81002521.

12520018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12519977 and 12520004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447130 + ... + 447157.

It is an arithmetic number, because the mean of its divisors is an integer number (2682864).

Almost surely, 2^12520018 is an apocalyptic number.

12520018 is a deficient number, since it is larger than the sum of its proper divisors (8942894).

12520018 is an equidigital number, since it uses as much as digits as its factorization.

12520018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894296.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 12520018 is about 3538.3637461403. The cubic root of 12520018 is about 232.2032627072.

Adding to 12520018 its reverse (81002521), we get a palindrome (93522539).

The spelling of 12520018 in words is "twelve million, five hundred twenty thousand, eighteen".