20194427 has 8 divisors (see below), whose sum is σ = 22568112. Its totient is φ = 17910400.

The previous prime is 20194409. The next prime is 20194507. The reversal of 20194427 is 72449102.

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 20194427 - 2¹⁴ = 20178043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20194427.

It is not an unprimeable number, because it can be changed into a prime (20194327) 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, 21938 + ... + 22839.

It is an arithmetic number, because the mean of its divisors is an integer number (2821014).

Almost surely, 2^20194427 is an apocalyptic number.

20194427 is a deficient number, since it is larger than the sum of its proper divisors (2373685).

20194427 is a wasteful number, since it uses less digits than its factorization.

20194427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44829.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20194427 is about 4493.8209799679. The cubic root of 20194427 is about 272.3185201320.

It can be divided in two parts, 2019 and 4427, that added together give a palindrome (6446).

The spelling of 20194427 in words is "twenty million, one hundred ninety-four thousand, four hundred twenty-seven".