20288463 has 32 divisors (see below), whose sum is σ = 31352832. Its totient is φ = 11558400.

The previous prime is 20288459. The next prime is 20288473. The reversal of 20288463 is 36488202.

It is not a de Polignac number, because 20288463 - 2² = 20288459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20288413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46858 + ... + 47288.

It is an arithmetic number, because the mean of its divisors is an integer number (979776).

Almost surely, 2^20288463 is an apocalyptic number.

20288463 is a deficient number, since it is larger than the sum of its proper divisors (11064369).

20288463 is a wasteful number, since it uses less digits than its factorization.

20288463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 20288463 is about 4504.2716392331. The cubic root of 20288463 is about 272.7405523938.

The spelling of 20288463 in words is "twenty million, two hundred eighty-eight thousand, four hundred sixty-three".