20685832 has 64 divisors (see below), whose sum is σ = 43747200. Its totient is φ = 9123840.

The previous prime is 20685823. The next prime is 20685869. The reversal of 20685832 is 23858602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213208 + ... + 213304.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^20685832 is an apocalyptic number.

It is an amenable number.

20685832 is an abundant number, since it is smaller than the sum of its proper divisors (23061368).

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

20685832 is a wasteful number, since it uses less digits than its factorization.

20685832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 20685832 is about 4548.1679828256. The cubic root of 20685832 is about 274.5096805599.

The spelling of 20685832 in words is "twenty million, six hundred eighty-five thousand, eight hundred thirty-two".