20816498 has 16 divisors (see below), whose sum is σ = 32240160. Its totient is φ = 10075296.

The previous prime is 20816489. The next prime is 20816503. The reversal of 20816498 is 89461802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6590 + ... + 9222.

It is an arithmetic number, because the mean of its divisors is an integer number (2015010).

Almost surely, 2^20816498 is an apocalyptic number.

20816498 is a deficient number, since it is larger than the sum of its proper divisors (11423662).

20816498 is a wasteful number, since it uses less digits than its factorization.

20816498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 20816498 is about 4562.5100547834. The cubic root of 20816498 is about 275.0864653727.

The spelling of 20816498 in words is "twenty million, eight hundred sixteen thousand, four hundred ninety-eight".