20193794 has 8 divisors (see below), whose sum is σ = 30315900. Its totient is φ = 10088496.

The previous prime is 20193791. The next prime is 20193799. The reversal of 20193794 is 49739102.

It can be written as a sum of positive squares in 2 ways, for example, as 15108769 + 5085025 = 3887^2 + 2255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20193794² = 815578632228872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20193791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569 + ... + 6380.

Almost surely, 2^20193794 is an apocalyptic number.

20193794 is a deficient number, since it is larger than the sum of its proper divisors (10122106).

20193794 is a wasteful number, since it uses less digits than its factorization.

20193794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20193794 is about 4493.7505493741. The cubic root of 20193794 is about 272.3156748021.

The spelling of 20193794 in words is "twenty million, one hundred ninety-three thousand, seven hundred ninety-four".