20169794 has 4 divisors (see below), whose sum is σ = 30254694. Its totient is φ = 10084896.

The previous prime is 20169767. The next prime is 20169817. The reversal of 20169794 is 49796102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49796102 = 2 ⋅24898051.

It can be written as a sum of positive squares in only one way, i.e., 17330569 + 2839225 = 4163^2 + 1685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5042447 + ... + 5042450.

Almost surely, 2^20169794 is an apocalyptic number.

20169794 is a deficient number, since it is larger than the sum of its proper divisors (10084900).

20169794 is a wasteful number, since it uses less digits than its factorization.

20169794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084899.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 20169794 is about 4491.0793802827. The cubic root of 20169794 is about 272.2077510996.

The spelling of 20169794 in words is "twenty million, one hundred sixty-nine thousand, seven hundred ninety-four".