16643130 has 64 divisors (see below), whose sum is σ = 46787328. Its totient is φ = 3709440.

The previous prime is 16643117. The next prime is 16643177. The reversal of 16643130 is 3134661.

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 16643130.

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, 7644 + ... + 9576.

It is an arithmetic number, because the mean of its divisors is an integer number (731052).

Almost surely, 2^16643130 is an apocalyptic number.

16643130 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 16643130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23393664).

16643130 is an abundant number, since it is smaller than the sum of its proper divisors (30144198).

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

16643130 is a wasteful number, since it uses less digits than its factorization.

16643130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 16643130 is about 4079.5992450240. The cubic root of 16643130 is about 255.3161783534.

Adding to 16643130 its reverse (3134661), we get a palindrome (19777791).

The spelling of 16643130 in words is "sixteen million, six hundred forty-three thousand, one hundred thirty".