20602271 has 4 divisors (see below), whose sum is σ = 20706000. Its totient is φ = 20498544.

The previous prime is 20602261. The next prime is 20602277. The reversal of 20602271 is 17220602.

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 20602271 - 2⁶ = 20602207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602277) 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, 51566 + ... + 51963.

It is an arithmetic number, because the mean of its divisors is an integer number (5176500).

Almost surely, 2^20602271 is an apocalyptic number.

20602271 is a deficient number, since it is larger than the sum of its proper divisors (103729).

20602271 is a wasteful number, since it uses less digits than its factorization.

20602271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103728.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20602271 is about 4538.9724608109. The cubic root of 20602271 is about 274.1395518721.

Adding to 20602271 its reverse (17220602), we get a palindrome (37822873).

The spelling of 20602271 in words is "twenty million, six hundred two thousand, two hundred seventy-one".