20426463 has 18 divisors (see below), whose sum is σ = 31144464. Its totient is φ = 12898872.

The previous prime is 20426459. The next prime is 20426473. The reversal of 20426463 is 36462402.

It is not a de Polignac number, because 20426463 - 2² = 20426459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106 + ... + 6392.

It is an arithmetic number, because the mean of its divisors is an integer number (1730248).

Almost surely, 2^20426463 is an apocalyptic number.

20426463 is a deficient number, since it is larger than the sum of its proper divisors (10718001).

20426463 is a wasteful number, since it uses less digits than its factorization.

20426463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331 (or 6309 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 20426463 is about 4519.5644701675. The cubic root of 20426463 is about 273.3575398286.

Adding to 20426463 its reverse (36462402), we get a palindrome (56888865).

The spelling of 20426463 in words is "twenty million, four hundred twenty-six thousand, four hundred sixty-three".