20202443 has 8 divisors (see below), whose sum is σ = 21711312. Its totient is φ = 18729216.

The previous prime is 20202439. The next prime is 20202451. The reversal of 20202443 is 34420202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202443 - 2² = 20202439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20202493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7730 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (2713914).

Almost surely, 2^20202443 is an apocalyptic number.

20202443 is a deficient number, since it is larger than the sum of its proper divisors (1508869).

20202443 is a wasteful number, since it uses less digits than its factorization.

20202443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17821.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20202443 is about 4494.7127828149. The cubic root of 20202443 is about 272.3545468453.

Adding to 20202443 its reverse (34420202), we get a palindrome (54622645).

The spelling of 20202443 in words is "twenty million, two hundred two thousand, four hundred forty-three".