13020418 has 4 divisors (see below), whose sum is σ = 19530630. Its totient is φ = 6510208.

The previous prime is 13020383. The next prime is 13020431. The reversal of 13020418 is 81402031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12981609 + 38809 = 3603^2 + 197^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13020395 and 13020404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255103 + ... + 3255106.

Almost surely, 2^13020418 is an apocalyptic number.

13020418 is a deficient number, since it is larger than the sum of its proper divisors (6510212).

13020418 is an equidigital number, since it uses as much as digits as its factorization.

13020418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510211.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13020418 is about 3608.3816317014. The cubic root of 13020418 is about 235.2565057944.

Adding to 13020418 its reverse (81402031), we get a palindrome (94422449).

The spelling of 13020418 in words is "thirteen million, twenty thousand, four hundred eighteen".