20488463 has 2 divisors, whose sum is σ = 20488464. Its totient is φ = 20488462.

The previous prime is 20488459. The next prime is 20488499. The reversal of 20488463 is 36488402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20488463 - 2² = 20488459 is a prime.

It is a super-2 number, since 2×20488463² = 839554232204738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20488063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10244231 + 10244232.

It is an arithmetic number, because the mean of its divisors is an integer number (10244232).

Almost surely, 2^20488463 is an apocalyptic number.

20488463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20488463 is an equidigital number, since it uses as much as digits as its factorization.

20488463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 20488463 is about 4526.4183412495. The cubic root of 20488463 is about 273.6338325452.

The spelling of 20488463 in words is "twenty million, four hundred eighty-eight thousand, four hundred sixty-three".