20686048 has 24 divisors (see below), whose sum is σ = 42131880. Its totient is φ = 9985920.

The previous prime is 20686033. The next prime is 20686051. The reversal of 20686048 is 84068602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10218 + ... + 12073.

It is an arithmetic number, because the mean of its divisors is an integer number (1755495).

Almost surely, 2^20686048 is an apocalyptic number.

It is an amenable number.

20686048 is an abundant number, since it is smaller than the sum of its proper divisors (21445832).

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

20686048 is a wasteful number, since it uses less digits than its factorization.

20686048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330 (or 22322 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20686048 is about 4548.1917285884. The cubic root of 20686048 is about 274.5106360268.

The spelling of 20686048 in words is "twenty million, six hundred eighty-six thousand, forty-eight".