16673242 has 4 divisors (see below), whose sum is σ = 25009866. Its totient is φ = 8336620.

The previous prime is 16673227. The next prime is 16673281. The reversal of 16673242 is 24237661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24237661 = 7 ⋅3462523.

It can be written as a sum of positive squares in only one way, i.e., 15768841 + 904401 = 3971^2 + 951^2 .

It is a super-3 number, since 3×16673242³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4168309 + ... + 4168312.

Almost surely, 2^16673242 is an apocalyptic number.

16673242 is a deficient number, since it is larger than the sum of its proper divisors (8336624).

16673242 is an equidigital number, since it uses as much as digits as its factorization.

16673242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336623.

The product of its digits is 12096, while the sum is 31.

The square root of 16673242 is about 4083.2881358043. The cubic root of 16673242 is about 255.4700646477.

The spelling of 16673242 in words is "sixteen million, six hundred seventy-three thousand, two hundred forty-two".