20473443 has 6 divisors (see below), whose sum is σ = 29572764. Its totient is φ = 13648956.

The previous prime is 20473433. The next prime is 20473451. The reversal of 20473443 is 34437402.

It is not a de Polignac number, because 20473443 - 2¹² = 20469347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20473433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137405 + ... + 1137422.

It is an arithmetic number, because the mean of its divisors is an integer number (4928794).

Almost surely, 2^20473443 is an apocalyptic number.

20473443 is a deficient number, since it is larger than the sum of its proper divisors (9099321).

20473443 is a wasteful number, since it uses less digits than its factorization.

20473443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274833 (or 2274830 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 20473443 is about 4524.7588886039. The cubic root of 20473443 is about 273.5669496217.

The spelling of 20473443 in words is "twenty million, four hundred seventy-three thousand, four hundred forty-three".