18350208 has 96 divisors (see below), whose sum is σ = 55970460. Its totient is φ = 5750784.

The previous prime is 18350201. The next prime is 18350231. The reversal of 18350208 is 80205381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18045504 + 304704 = 4248^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18350201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19116 + ... + 20052.

Almost surely, 2^18350208 is an apocalyptic number.

18350208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18350208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27985230).

18350208 is an abundant number, since it is smaller than the sum of its proper divisors (37620252).

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

18350208 is a wasteful number, since it uses less digits than its factorization.

18350208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18350208 is about 4283.7142761860. The cubic root of 18350208 is about 263.7628724728.

Adding to 18350208 its reverse (80205381), we get a palindrome (98555589).

The spelling of 18350208 in words is "eighteen million, three hundred fifty thousand, two hundred eight".