20023463 has 2 divisors, whose sum is σ = 20023464. Its totient is φ = 20023462.

The previous prime is 20023459. The next prime is 20023469. The reversal of 20023463 is 36432002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20023463 - 2² = 20023459 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023469) 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, 10011731 + 10011732.

It is an arithmetic number, because the mean of its divisors is an integer number (10011732).

Almost surely, 2^20023463 is an apocalyptic number.

20023463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023463 is an equidigital number, since it uses as much as digits as its factorization.

20023463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20023463 is about 4474.7584292339. The cubic root of 20023463 is about 271.5478674785.

Adding to 20023463 its reverse (36432002), we get a palindrome (56455465).

The spelling of 20023463 in words is "twenty million, twenty-three thousand, four hundred sixty-three".