20027147 has 16 divisors (see below), whose sum is σ = 24213504. Its totient is φ = 16200000.

The previous prime is 20027131. The next prime is 20027177. The reversal of 20027147 is 74172002.

It is a cyclic number.

It is not a de Polignac number, because 20027147 - 2⁴ = 20027131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20027177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7772 + ... + 10022.

It is an arithmetic number, because the mean of its divisors is an integer number (1513344).

Almost surely, 2^20027147 is an apocalyptic number.

20027147 is a deficient number, since it is larger than the sum of its proper divisors (4186357).

20027147 is a wasteful number, since it uses less digits than its factorization.

20027147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20027147 is about 4475.1700526349. The cubic root of 20027147 is about 271.5645199593.

Adding to 20027147 its reverse (74172002), we get a palindrome (94199149).

The spelling of 20027147 in words is "twenty million, twenty-seven thousand, one hundred forty-seven".