20684552 has 32 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 8833920.

The previous prime is 20684549. The next prime is 20684557. The reversal of 20684552 is 25548602.

It is not an unprimeable number, because it can be changed into a prime (20684557) by changing a digit.

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, 23708 + ... + 24564.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^20684552 is an apocalyptic number.

It is an amenable number.

20684552 is an abundant number, since it is smaller than the sum of its proper divisors (23794168).

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

20684552 is a wasteful number, since it uses less digits than its factorization.

20684552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 20684552 is about 4548.0272646500. The cubic root of 20684552 is about 274.5040183972.

The spelling of 20684552 in words is "twenty million, six hundred eighty-four thousand, five hundred fifty-two".