20807463 has 8 divisors (see below), whose sum is σ = 27792000. Its totient is φ = 13847288.

The previous prime is 20807447. The next prime is 20807483. The reversal of 20807463 is 36470802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20807463 - 2⁴ = 20807447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20807463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20807443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3993 + ... + 7586.

It is an arithmetic number, because the mean of its divisors is an integer number (3474000).

Almost surely, 2^20807463 is an apocalyptic number.

20807463 is a deficient number, since it is larger than the sum of its proper divisors (6984537).

20807463 is a wasteful number, since it uses less digits than its factorization.

20807463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12181.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20807463 is about 4561.5198125186. The cubic root of 20807463 is about 275.0466609528.

The spelling of 20807463 in words is "twenty million, eight hundred seven thousand, four hundred sixty-three".