16530418 has 16 divisors (see below), whose sum is σ = 26226720. Its totient is φ = 7792416.

The previous prime is 16530413. The next prime is 16530419. The reversal of 16530418 is 81403561.

It is not an unprimeable number, because it can be changed into a prime (16530413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7921 + ... + 9787.

It is an arithmetic number, because the mean of its divisors is an integer number (1639170).

Almost surely, 2^16530418 is an apocalyptic number.

16530418 is a deficient number, since it is larger than the sum of its proper divisors (9696302).

16530418 is a wasteful number, since it uses less digits than its factorization.

16530418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 16530418 is about 4065.7616752584. The cubic root of 16530418 is about 254.7385144752.

Adding to 16530418 its reverse (81403561), we get a palindrome (97933979).

The spelling of 16530418 in words is "sixteen million, five hundred thirty thousand, four hundred eighteen".