18748206 has 64 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 5974848.

The previous prime is 18748199. The next prime is 18748207. The reversal of 18748206 is 60284781.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18748207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210610 + ... + 210698.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^18748206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18748206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

18748206 is an abundant number, since it is smaller than the sum of its proper divisors (24797394).

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

18748206 is a wasteful number, since it uses less digits than its factorization.

18748206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 18748206 is about 4329.9198606903. The cubic root of 18748206 is about 265.6561690944.

The spelling of 18748206 in words is "eighteen million, seven hundred forty-eight thousand, two hundred six".