16642104 has 16 divisors (see below), whose sum is σ = 41605320. Its totient is φ = 5547360.

The previous prime is 16642103. The next prime is 16642111. The reversal of 16642104 is 40124661.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 693421 = 16642104 / (1 + 6 + 6 + 4 + 2 + 1 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346687 + ... + 346734.

Almost surely, 2^16642104 is an apocalyptic number.

It is an amenable number.

16642104 is an abundant number, since it is smaller than the sum of its proper divisors (24963216).

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

16642104 is a wasteful number, since it uses less digits than its factorization.

16642104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693430 (or 693426 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 16642104 is about 4079.4734954403. The cubic root of 16642104 is about 255.3109317485.

Adding to 16642104 its reverse (40124661), we get a palindrome (56766765).

The spelling of 16642104 in words is "sixteen million, six hundred forty-two thousand, one hundred four".