20474443 has 16 divisors (see below), whose sum is σ = 23901696. Its totient is φ = 17331840.

The previous prime is 20474429. The next prime is 20474449. The reversal of 20474443 is 34447402.

It is not a de Polignac number, because 20474443 - 2⁵ = 20474411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20474449) 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, 18730 + ... + 19792.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^20474443 is an apocalyptic number.

20474443 is a deficient number, since it is larger than the sum of its proper divisors (3427253).

20474443 is a wasteful number, since it uses less digits than its factorization.

20474443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 20474443 is about 4524.8693903802. The cubic root of 20474443 is about 273.5714035622.

It can be divided in two parts, 204 and 74443, that added together give a palindrome (74647).

The spelling of 20474443 in words is "twenty million, four hundred seventy-four thousand, four hundred forty-three".