16530838 has 4 divisors (see below), whose sum is σ = 24796260. Its totient is φ = 8265418.

The previous prime is 16530827. The next prime is 16530847. The reversal of 16530838 is 83803561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83803561 = 1049 ⋅79889.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4132708 + ... + 4132711.

It is an arithmetic number, because the mean of its divisors is an integer number (6199065).

Almost surely, 2^16530838 is an apocalyptic number.

16530838 is a deficient number, since it is larger than the sum of its proper divisors (8265422).

16530838 is an equidigital number, since it uses as much as digits as its factorization.

16530838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265421.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 16530838 is about 4065.8133257689. The cubic root of 16530838 is about 254.7406718973.

The spelling of 16530838 in words is "sixteen million, five hundred thirty thousand, eight hundred thirty-eight".