20416443 has 16 divisors (see below), whose sum is σ = 28148736. Its totient is φ = 13154400.

The previous prime is 20416391. The next prime is 20416453. The reversal of 20416443 is 34461402.

It is not a de Polignac number, because 20416443 - 2⁹ = 20415931 is a prime.

It is a super-2 number, since 2×20416443² = 833662289544498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20416453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12246 + ... + 13812.

It is an arithmetic number, because the mean of its divisors is an integer number (1759296).

Almost surely, 2^20416443 is an apocalyptic number.

20416443 is a deficient number, since it is larger than the sum of its proper divisors (7732293).

20416443 is a wasteful number, since it uses less digits than its factorization.

20416443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20416443 is about 4518.4558202997. The cubic root of 20416443 is about 273.3128349027.

Adding to 20416443 its reverse (34461402), we get a palindrome (54877845).

The spelling of 20416443 in words is "twenty million, four hundred sixteen thousand, four hundred forty-three".