20410471 has 4 divisors (see below), whose sum is σ = 20540632. Its totient is φ = 20280312.

The previous prime is 20410463. The next prime is 20410477. The reversal of 20410471 is 17401402.

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 20410471 - 2³ = 20410463 is a prime.

It is a super-3 number, since 3×20410471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20410477) 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, 64845 + ... + 65158.

It is an arithmetic number, because the mean of its divisors is an integer number (5135158).

Almost surely, 2^20410471 is an apocalyptic number.

20410471 is a deficient number, since it is larger than the sum of its proper divisors (130161).

20410471 is a wasteful number, since it uses less digits than its factorization.

20410471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130160.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20410471 is about 4517.7949267314. The cubic root of 20410471 is about 273.2861834528.

Adding to 20410471 its reverse (17401402), we get a palindrome (37811873).

The spelling of 20410471 in words is "twenty million, four hundred ten thousand, four hundred seventy-one".