16494433 has 4 divisors (see below), whose sum is σ = 16539028. Its totient is φ = 16449840.

The previous prime is 16494431. The next prime is 16494469. The reversal of 16494433 is 33449461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13712209 + 2782224 = 3703^2 + 1668^2 .

It is a cyclic number.

It is not a de Polignac number, because 16494433 - 2¹ = 16494431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16494431) 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, 21738 + ... + 22483.

It is an arithmetic number, because the mean of its divisors is an integer number (4134757).

Almost surely, 2^16494433 is an apocalyptic number.

It is an amenable number.

16494433 is a deficient number, since it is larger than the sum of its proper divisors (44595).

16494433 is an equidigital number, since it uses as much as digits as its factorization.

16494433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44594.

The product of its digits is 31104, while the sum is 34.

The square root of 16494433 is about 4061.3338941781. Note that the first 3 decimals coincide. The cubic root of 16494433 is about 254.5535337688.

The spelling of 16494433 in words is "sixteen million, four hundred ninety-four thousand, four hundred thirty-three".