20684794 has 16 divisors (see below), whose sum is σ = 34126848. Its totient is φ = 9343152.

The previous prime is 20684791. The next prime is 20684809. The reversal of 20684794 is 49748602.

It is not an unprimeable number, because it can be changed into a prime (20684791) 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, 7242 + ... + 9685.

It is an arithmetic number, because the mean of its divisors is an integer number (2132928).

Almost surely, 2^20684794 is an apocalyptic number.

20684794 is a deficient number, since it is larger than the sum of its proper divisors (13442054).

20684794 is a wasteful number, since it uses less digits than its factorization.

20684794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 20684794 is about 4548.0538695139. The cubic root of 20684794 is about 274.5050889177.

The spelling of 20684794 in words is "twenty million, six hundred eighty-four thousand, seven hundred ninety-four".