16690230 has 48 divisors (see below), whose sum is σ = 44226000. Its totient is φ = 4365504.

The previous prime is 16690229. The next prime is 16690231. The reversal of 16690230 is 3209661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16690229) and next prime (16690231).

It is a junction number, because it is equal to n+sod(n) for n = 16690194 and 16690203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3021 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^16690230 is an apocalyptic number.

16690230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16690230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22113000).

16690230 is an abundant number, since it is smaller than the sum of its proper divisors (27535770).

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

16690230 is a wasteful number, since it uses less digits than its factorization.

16690230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3562 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 16690230 is about 4085.3677925005. The cubic root of 16690230 is about 255.5567994758.

Adding to 16690230 its reverse (3209661), we get a palindrome (19899891).

The spelling of 16690230 in words is "sixteen million, six hundred ninety thousand, two hundred thirty".