20486808 has 24 divisors (see below), whose sum is σ = 55485300. Its totient is φ = 6828912.

The previous prime is 20486797. The next prime is 20486831. The reversal of 20486808 is 80868402.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 142198 + ... + 142341.

Almost surely, 2^20486808 is an apocalyptic number.

It is an amenable number.

20486808 is an abundant number, since it is smaller than the sum of its proper divisors (34998492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20486808 is a wasteful number, since it uses less digits than its factorization.

20486808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284551 (or 284544 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 20486808 is about 4526.2355219321. The cubic root of 20486808 is about 273.6264645582.

The spelling of 20486808 in words is "twenty million, four hundred eighty-six thousand, eight hundred eight".