16653138 has 16 divisors (see below), whose sum is σ = 34381056. Its totient is φ = 5371920.

The previous prime is 16653137. The next prime is 16653151. The reversal of 16653138 is 83135661.

It is a junction number, because it is equal to n+sod(n) for n = 16653099 and 16653108.

It is not an unprimeable number, because it can be changed into a prime (16653137) 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, 44581 + ... + 44952.

It is an arithmetic number, because the mean of its divisors is an integer number (2148816).

Almost surely, 2^16653138 is an apocalyptic number.

16653138 is an abundant number, since it is smaller than the sum of its proper divisors (17727918).

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

16653138 is a wasteful number, since it uses less digits than its factorization.

16653138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89569.

The product of its digits is 12960, while the sum is 33.

The square root of 16653138 is about 4080.8256517524. The cubic root of 16653138 is about 255.3673444564.

Adding to 16653138 its reverse (83135661), we get a palindrome (99788799).

The spelling of 16653138 in words is "sixteen million, six hundred fifty-three thousand, one hundred thirty-eight".