20214684 has 72 divisors (see below), whose sum is σ = 60581248. Its totient is φ = 5773680.

The previous prime is 20214673. The next prime is 20214707. The reversal of 20214684 is 48641202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 5319 + ... + 8289.

Almost surely, 2^20214684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20214684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30290624).

20214684 is an abundant number, since it is smaller than the sum of its proper divisors (40366564).

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

20214684 is a wasteful number, since it uses less digits than its factorization.

20214684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2983 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20214684 is about 4496.0742876425. The cubic root of 20214684 is about 272.4095438058.

Adding to 20214684 its reverse (48641202), we get a palindrome (68855886).

The spelling of 20214684 in words is "twenty million, two hundred fourteen thousand, six hundred eighty-four".