20471036 has 12 divisors (see below), whose sum is σ = 36980160. Its totient is φ = 9905280.

The previous prime is 20471029. The next prime is 20471041. The reversal of 20471036 is 63017402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82421 + ... + 82668.

It is an arithmetic number, because the mean of its divisors is an integer number (3081680).

Almost surely, 2^20471036 is an apocalyptic number.

It is an amenable number.

20471036 is a deficient number, since it is larger than the sum of its proper divisors (16509124).

20471036 is a wasteful number, since it uses less digits than its factorization.

20471036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165124 (or 165122 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20471036 is about 4524.4928997624. The cubic root of 20471036 is about 273.5562283920.

Adding to 20471036 its reverse (63017402), we get a palindrome (83488438).

The spelling of 20471036 in words is "twenty million, four hundred seventy-one thousand, thirty-six".