20794609 has 12 divisors (see below), whose sum is σ = 23199120. Its totient is φ = 18479960.

The previous prime is 20794573. The next prime is 20794619. The reversal of 20794609 is 90649702.

It is not a de Polignac number, because 20794609 - 2¹⁵ = 20761841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20794619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116082 + ... + 116260.

It is an arithmetic number, because the mean of its divisors is an integer number (1933260).

Almost surely, 2^20794609 is an apocalyptic number.

It is an amenable number.

20794609 is a deficient number, since it is larger than the sum of its proper divisors (2404511).

20794609 is an equidigital number, since it uses as much as digits as its factorization.

20794609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 20794609 is about 4560.1106346228. The cubic root of 20794609 is about 274.9900117584.

The spelling of 20794609 in words is "twenty million, seven hundred ninety-four thousand, six hundred nine".