20884684 has 6 divisors (see below), whose sum is σ = 36548204. Its totient is φ = 10442340.

The previous prime is 20884673. The next prime is 20884693. The reversal of 20884684 is 48648802.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610582 + ... + 2610589.

Almost surely, 2^20884684 is an apocalyptic number.

It is an amenable number.

20884684 is a deficient number, since it is larger than the sum of its proper divisors (15663520).

20884684 is a wasteful number, since it uses less digits than its factorization.

20884684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221175 (or 5221173 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 20884684 is about 4569.9763675538. The cubic root of 20884684 is about 275.3864934703.

The spelling of 20884684 in words is "twenty million, eight hundred eighty-four thousand, six hundred eighty-four".