20193845 has 8 divisors (see below), whose sum is σ = 27694464. Its totient is φ = 13847184.

The previous prime is 20193799. The next prime is 20193863. The reversal of 20193845 is 54839102.

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

It is a cyclic number.

It is not a de Polignac number, because 20193845 - 2¹⁴ = 20177461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288449 + ... + 288518.

It is an arithmetic number, because the mean of its divisors is an integer number (3461808).

Almost surely, 2^20193845 is an apocalyptic number.

It is an amenable number.

20193845 is a deficient number, since it is larger than the sum of its proper divisors (7500619).

20193845 is an equidigital number, since it uses as much as digits as its factorization.

20193845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576979.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20193845 is about 4493.7562239178. The cubic root of 20193845 is about 272.3159040489.

The spelling of 20193845 in words is "twenty million, one hundred ninety-three thousand, eight hundred forty-five".