20219027 has 4 divisors (see below), whose sum is σ = 20712216. Its totient is φ = 19725840.

The previous prime is 20219011. The next prime is 20219033. The reversal of 20219027 is 72091202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20219027 - 2⁴ = 20219011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20218993 and 20219011.

It is not an unprimeable number, because it can be changed into a prime (20219077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246533 + ... + 246614.

It is an arithmetic number, because the mean of its divisors is an integer number (5178054).

Almost surely, 2^20219027 is an apocalyptic number.

20219027 is a deficient number, since it is larger than the sum of its proper divisors (493189).

20219027 is an equidigital number, since it uses as much as digits as its factorization.

20219027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493188.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20219027 is about 4496.5572385993. The cubic root of 20219027 is about 272.4290509115.

The spelling of 20219027 in words is "twenty million, two hundred nineteen thousand, twenty-seven".