16522138 has 8 divisors (see below), whose sum is σ = 25061940. Its totient is φ = 8168160.

The previous prime is 16522123. The next prime is 16522171. The reversal of 16522138 is 83122561.

It can be written as a sum of positive squares in 2 ways, for example, as 16265089 + 257049 = 4033^2 + 507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46233 + ... + 46588.

Almost surely, 2^16522138 is an apocalyptic number.

16522138 is a deficient number, since it is larger than the sum of its proper divisors (8539802).

16522138 is an equidigital number, since it uses as much as digits as its factorization.

16522138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92912.

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

The square root of 16522138 is about 4064.7432883271. The cubic root of 16522138 is about 254.6959749749.

Adding to 16522138 its reverse (83122561), we get a palindrome (99644699).

The spelling of 16522138 in words is "sixteen million, five hundred twenty-two thousand, one hundred thirty-eight".