20124471 has 16 divisors (see below), whose sum is σ = 28532736. Its totient is φ = 12588576.

The previous prime is 20124457. The next prime is 20124479. The reversal of 20124471 is 17442102.

It is a happy number.

It is not a de Polignac number, because 20124471 - 2⁶ = 20124407 is a prime.

It is a super-3 number, since 3×20124471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (1783296).

Almost surely, 2^20124471 is an apocalyptic number.

20124471 is a deficient number, since it is larger than the sum of its proper divisors (8408265).

20124471 is a wasteful number, since it uses less digits than its factorization.

20124471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20124471 is about 4486.0306508092. The cubic root of 20124471 is about 272.0037079584.

Adding to 20124471 its reverse (17442102), we get a palindrome (37566573).

The spelling of 20124471 in words is "twenty million, one hundred twenty-four thousand, four hundred seventy-one".