20282939 has 2 divisors, whose sum is σ = 20282940. Its totient is φ = 20282938.

The previous prime is 20282929. The next prime is 20282957. The reversal of 20282939 is 93928202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20282939 - 2²⁰ = 19234363 is a prime.

It is a super-2 number, since 2×20282939² = 822795228955442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20282899 and 20282908.

It is not a weakly prime, because it can be changed into another prime (20282909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10141469 + 10141470.

It is an arithmetic number, because the mean of its divisors is an integer number (10141470).

Almost surely, 2^20282939 is an apocalyptic number.

20282939 is a deficient number, since it is larger than the sum of its proper divisors (1).

20282939 is an equidigital number, since it uses as much as digits as its factorization.

20282939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20282939 is about 4503.6584017885. The cubic root of 20282939 is about 272.7157968538.

The spelling of 20282939 in words is "twenty million, two hundred eighty-two thousand, nine hundred thirty-nine".