13218250 has 32 divisors (see below), whose sum is σ = 25431120. Its totient is φ = 5140800.

The previous prime is 13218209. The next prime is 13218263. The reversal of 13218250 is 5281231.

13218250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 279841 + 12938409 = 529^2 + 3597^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8536 + ... + 9964.

Almost surely, 2^13218250 is an apocalyptic number.

13218250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13218250 is a deficient number, since it is larger than the sum of its proper divisors (12212870).

13218250 is a wasteful number, since it uses less digits than its factorization.

13218250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 13218250 is about 3635.6911309956. The cubic root of 13218250 is about 236.4420160984.

Adding to 13218250 its reverse (5281231), we get a palindrome (18499481).

The spelling of 13218250 in words is "thirteen million, two hundred eighteen thousand, two hundred fifty".