20064471 has 64 divisors (see below), whose sum is σ = 35020800. Its totient is φ = 10160640.

The previous prime is 20064469. The next prime is 20064479. The reversal of 20064471 is 17446002.

It is not a de Polignac number, because 20064471 - 2¹ = 20064469 is a prime.

It is a super-3 number, since 3×20064471³ (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 (20064479) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 542265 + ... + 542301.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^20064471 is an apocalyptic number.

20064471 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20064471 is a deficient number, since it is larger than the sum of its proper divisors (14956329).

20064471 is a wasteful number, since it uses less digits than its factorization.

20064471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20064471 is about 4479.3382323732. The cubic root of 20064471 is about 271.7331175136.

The spelling of 20064471 in words is "twenty million, sixty-four thousand, four hundred seventy-one".