16620230 has 32 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 5994720.

The previous prime is 16620229. The next prime is 16620239. The reversal of 16620230 is 3202661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16620239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14747 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^16620230 is an apocalyptic number.

16620230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16620230 is a deficient number, since it is larger than the sum of its proper divisors (16280890).

16620230 is a wasteful number, since it uses less digits than its factorization.

16620230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 16620230 is about 4076.7916306821. The cubic root of 16620230 is about 255.1990244261.

Adding to 16620230 its reverse (3202661), we get a palindrome (19822891).

Subtracting from 16620230 its reverse (3202661), we obtain a square (13417569 = 3663²).

The spelling of 16620230 in words is "sixteen million, six hundred twenty thousand, two hundred thirty".