20834684 has 24 divisors (see below), whose sum is σ = 39664128. Its totient is φ = 9518400.

The previous prime is 20834657. The next prime is 20834687. The reversal of 20834684 is 48643802.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20834687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3269 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (1652672).

Almost surely, 2^20834684 is an apocalyptic number.

It is an amenable number.

20834684 is a deficient number, since it is larger than the sum of its proper divisors (18829444).

20834684 is a wasteful number, since it uses less digits than its factorization.

20834684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 20834684 is about 4564.5026015986. The cubic root of 20834684 is about 275.1665503501.

The spelling of 20834684 in words is "twenty million, eight hundred thirty-four thousand, six hundred eighty-four".