20832047 has 2 divisors, whose sum is σ = 20832048. Its totient is φ = 20832046.

The previous prime is 20832023. The next prime is 20832061. The reversal of 20832047 is 74023802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20832047 - 2⁶ = 20831983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20838047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416023 + 10416024.

It is an arithmetic number, because the mean of its divisors is an integer number (10416024).

Almost surely, 2^20832047 is an apocalyptic number.

20832047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20832047 is an equidigital number, since it uses as much as digits as its factorization.

20832047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20832047 is about 4564.2137329446. The cubic root of 20832047 is about 275.1549407859.

Adding to 20832047 its reverse (74023802), we get a palindrome (94855849).

The spelling of 20832047 in words is "twenty million, eight hundred thirty-two thousand, forty-seven".