20498648 has 16 divisors (see below), whose sum is σ = 38809680. Its totient is φ = 10149408.

The previous prime is 20498633. The next prime is 20498707. The reversal of 20498648 is 84689402.

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 3 ways as a sum of consecutive naturals, for example, 11615 + ... + 13262.

It is an arithmetic number, because the mean of its divisors is an integer number (2425605).

Almost surely, 2^20498648 is an apocalyptic number.

It is an amenable number.

20498648 is a deficient number, since it is larger than the sum of its proper divisors (18311032).

20498648 is a wasteful number, since it uses less digits than its factorization.

20498648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24986 (or 24982 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 20498648 is about 4527.5432631837. The cubic root of 20498648 is about 273.6791669838.

The spelling of 20498648 in words is "twenty million, four hundred ninety-eight thousand, six hundred forty-eight".