13750218 has 12 divisors (see below), whose sum is σ = 29792178. Its totient is φ = 4583400.

The previous prime is 13750201. The next prime is 13750259. The reversal of 13750218 is 81205731.

It can be written as a sum of positive squares in only one way, i.e., 6953769 + 6796449 = 2637^2 + 2607^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13750191 and 13750200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381933 + ... + 381968.

Almost surely, 2^13750218 is an apocalyptic number.

13750218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13750218 is an abundant number, since it is smaller than the sum of its proper divisors (16041960).

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

13750218 is a wasteful number, since it uses less digits than its factorization.

13750218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763909 (or 763906 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13750218 is about 3708.1286385453. The cubic root of 13750218 is about 239.5722589428.

Adding to 13750218 its reverse (81205731), we get a palindrome (94955949).

The spelling of 13750218 in words is "thirteen million, seven hundred fifty thousand, two hundred eighteen".