18532206 has 64 divisors (see below), whose sum is σ = 51356160. Its totient is φ = 4812480.

The previous prime is 18532103. The next prime is 18532211. The reversal of 18532206 is 60223581.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18532206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1930 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (802440).

Almost surely, 2^18532206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18532206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25678080).

18532206 is an abundant number, since it is smaller than the sum of its proper divisors (32823954).

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

18532206 is a wasteful number, since it uses less digits than its factorization.

18532206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4480 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 18532206 is about 4304.9048769979. The cubic root of 18532206 is about 264.6320085095.

Adding to 18532206 its reverse (60223581), we get a palindrome (78755787).

The spelling of 18532206 in words is "eighteen million, five hundred thirty-two thousand, two hundred six".